CAMHS Flashcards

Question

A child becomes extremely distressed when routines change and cannot adapt to new situations despite reassurance. Which cognitive theory best explains this behaviour? A. Weak central coherence B. Theory of mind deficit C. Executive dysfunction D. Attachment disturbance E. Language impairment ⸻

Answer 1

✅ Correct answer C. Executive dysfunction ⸻ • Cognitive inflexibility • Poor set-shifting ability • Difficulty adapting behaviour ⭐ High-yield facts • Explains repetitive behaviours • Linked to frontal networks ⸻ **Rigidity and poor adaptability indicate executive dysfunction.**

Answer 2

✅ Correct answer A. ADHD Why A is correct • ADHD is the most common psychiatric comorbidity in ASD • Prevalence ~30–50% ⭐ High-yield facts • Anxiety disorders also very common • Intellectual disability present in ~30–40% • Sleep disorders frequent

Answer 3

✅ Correct answer B. Genetic loading ⸻ Why B is correct • ASD is highly heritable • Twin studies show heritability up to ~80–90% • Strong familial clustering ⭐ High-yield facts • Sibling recurrence risk ~10–20% • Multiple genetic variants implicated • Syndromic ASD associations: Fragile X Tuberous sclerosis Rett syndrome

Answer 4

✅ Correct answer B. Intensive interaction ⸻ Clear, exam-focused explanation Why B is correct • Intensive interaction is based on: Mirroring behaviour Pre-verbal communication techniques Building engagement through imitation • Especially useful for: Non-verbal children Severe autism Profound learning disability ⸻ Why others are wrong • Social stories Narrative preparation for situations • ABA Behaviour modification using reinforcement • PECS Communication via picture exchange • TEACCH Structured teaching approach ⭐ High-yield facts • Based on caregiver–infant interaction principles • Focus on shared attention • Improves social engagement rather than language directly

Answer 5

✅ Correct answer B. Social stories ⸻ Why B is correct • Social stories prepare individuals for specific situations • Developed by Carol Gray • Explain expectations and reduce anxiety Why others are wrong • Visual schedules → daily routines • Intensive interaction → communication development • Now and next cards → transitions between tasks • ABA → broad behavioural intervention ⭐ High-yield facts • Useful for new experiences • Written in simple, concrete language • Often personalised

Answer 6

✅ Correct answer C. Now and next cards Explanation Why C is correct • Simple visual tool: What is happening NOW What happens NEXT Reduces uncertainty and distress ⸻ Why others are wrong • Social stories → narrative preparation • Intensive interaction → social engagement therapy • TEACCH → structured teaching approach (broader) • Floor time → relationship-based therapy ⭐ High-yield facts • Particularly useful for transitions • Often used in schools and CAMHS • Supports executive difficulties

Answer 7

✅ Correct answer D. Short trial of melatonin ⸻ Clear, exam-focused explanation Why D is correct • Melatonin regulates circadian rhythm • Evidence supports use in neurodevelopmental disorders • Reduces sleep latency • Generally safe and well tolerated ⭐ High-yield facts • Sleep problems common in ASD (~50–80%) • Melatonin often first pharmacological choice • Continue sleep hygiene measures

Answer 8

✅ Correct answer B. Behavioural/functional analysis ⸻ Clear, exam-focused explanation Why B is correct • First step is to determine: Triggers Function of behaviour Maintaining factors • Known as Functional Behavioural Assessment (FBA) Common functions of behaviour: • Communication of needs • Escape/avoidance • Attention seeking • Sensory stimulation ⭐ High-yield facts • Challenging behaviour often communicates unmet needs • Pain or medical issues must be excluded • Environmental adjustments often effective

Answer 9

✅ Correct answer B. Reactive Attachment Disorder ⸻ Explanation • RAD requires history of neglect/insufficient caregiving • Social difficulties are context-dependent • Play skills may be preserved ASD: • Neurodevelopmental • Not caused by neglect • Restricted/repetitive behaviours present ⭐ High-yield facts • RAD = attachment disturbance • ASD = neurodevelopmental condition • RRBs absent in RAD

Answer 10

✅ Correct answer B. Intellectual Disability ⸻ Explanation • Social reciprocity preserved → argues against ASD • ID affects overall cognitive functioning ⭐ High-yield facts • ASD can occur with ID • Core ASD feature = qualitative social impairment

Answer 11

✅ Correct answer B. M-CHAT ⸻ Explanation • Modified Checklist for Autism in Toddlers • Screening tool, not diagnostic ⭐ High-yield facts • Used at 18–24 months • Parent questionnaire

Answer 12

✅ Correct answer A. ADOS ⸻ Explanation ADOS = Autism Diagnostic Observation Schedule • Structured behavioural assessment • Conducted by trained clinician ⭐ High-yield facts • Often used with ADI-R (parent interview) • Multidisciplinary diagnosis required

Answer 13

✅ Correct answer B. Social Communication Disorder ⸻ Explanation DSM-5 rule: • ASD requires BOTH: Social communication deficits Restricted/repetitive behaviours Without RRBs → SCD ⸻ 5️⃣ ⭐ High-yield facts • SCD introduced in DSM-5 • Often confused with ASD

Answer 14

✅ Correct answer B. Aripiprazole ⸻ Explanation • Aripiprazole and risperidone approved for irritability in ASD • Used only when behaviour severe

Answer 15

✅ Correct answer B. Autism regression ⸻ 3️⃣ Explanation • Regression occurs in ~20–30% of ASD cases • Often between 18–24 months

Answer 16

✅ Correct answer D. Tourette syndrome ⸻ ✅ Why D is correct (examiner logic) • The stem gives both: multiple motor tics (eye blinking, head jerking) ≥1 vocal tic (throat clearing, grunting) • Duration > 12 months • Age 9 fits typical onset (childhood, often 5–7 yrs; peak severity ~10–12) 📘 ICD-11/DSM-5/NICE rules + what exam is testing This is a DIAGNOSIS question. DSM-5 / ICD-11 tic disorder logic (exam-usable) • Tourette syndrome: Multiple motor tics AND ≥1 vocal tic Present for > 1 year (waxing/waning allowed) Onset < 18 years • Persistent (chronic) motor OR vocal tic disorder: Motor OR vocal, not both, > 1 year • Provisional tic disorder: Tics present < 1 year NICE NG196 (Tics/Tourette) • Tics commonly wax and wane • First-line is often psychoeducation + behavioural intervention (when impairing) • Medication reserved for moderate–severe impairment/distress ⸻ 5️⃣ ⭐ High-yield facts to memorise (5–7) • Tourette = multiple motor + ≥1 vocal tic for > 12 months • Onset <18 years • Course: waxing/waning, peak in early adolescence • Premonitory urge common in older children/adolescents • Common comorbidity: ADHD and OCD • Coprolalia is uncommon (often overestimated in exams) • Many improve by late adolescence/adulthood

Answer 17

✅ Correct answer A. Grimacing ⸻ Explanation (why correct + why others wrong) ✅ Why A is correct • Simple motor tics are: brief sudden meaningless • involve a limited number of muscle groups • Examples: eye blinking, grimacing, head jerks, shoulder shrug ❌ Why others are wrong (key distinctions) B Touching objects This is a complex motor tic (purposeful/seemingly purposeful) C Hopping Also complex motor tic (whole-body, patterned) D Coprolalia This is a complex vocal tic (involuntary obscene words/phrases) E Echolalia Complex vocal tic (repeating others’ words) ⸻ 📘 Rules + what exam is testing Phenomenology / classification • Simple motor: brief, meaningless movements • Complex motor: coordinated, purposeful-appearing acts • Simple vocal: throat clearing, sniffing, grunting • Complex vocal: echolalia, palilalia, coprolalia ⸻ ⭐ High-yield facts • Tics are suppressible short-term (with rebound) • Often preceded by premonitory urge • Worsen with stress/fatigue, improve with absorption • Wax and wane over time • Complex tics can look “intentional” (medico-legal trap)

Answer 18

✅ Correct answer C. 3:1 ⭐ High-yield facts • Male:female in Tourette ≈ 3:1 • Typical onset in childhood • Peak severity 10–12 • Many improve in late adolescence • ADHD/OCD comorbidity common ⸻ ⚠️ Traps • Mixing up ASD ratio (often 4:1) with Tourette (3:1)

Answer 19

✅ Correct answer D. Persistent (chronic) tic disorder (as per this question bank) ⸻ Explanation — and the key nuance (VERY examable) ✅ Why D is selected here (examiner logic in this bank) • They are testing the rule: • Persistent tic disorder = motor OR vocal tics > 1 year • The question bank is treating the presentation as “chronic tic disorder” rather than Tourette. ⚠️ BUT HERE IS THE HIGH-YIELD EXAM TRAP (you must know) • Eye blinking (motor) + throat clearing (vocal) for >1 year would meet the Tourette definition if both are true tics and criteria are satisfied. • Some banks distinguish based on: • certainty about vocal tic vs habitual throat clearing • whether both have occurred simultaneously and continuously • whether there have been “multiple motor tics” (Tourette requires multiple motor tics, not just one) ✅ So in Paper B, your safest rule-based approach is: • If the stem clearly says multiple motor + ≥1 vocal for >1 year → Tourette • If it says motor OR vocal only → Persistent tic disorder • If it gives one motor + one vocal without emphasising “multiple motor tics” → some SBAs go for persistent tic disorder (as here) ICD-11/DSM-5/NICE rules + what exam is testing Diagnosis + classification trap • Tourette: multiple motor + ≥1 vocal, >1 year, onset <18 • Persistent motor or vocal tic disorder: motor OR vocal, >1 year • Provisional tic disorder: <1 year NICE NG196: • Always assess impairment, comorbidities (ADHD/OCD/anxiety), and differential (stereotypies, compulsions).

Answer 20

✅ Correct answer C. Transient (Provisional) Tic Disorder ⸻ 3️⃣ Explanation — why correct + distractors ✅ Why C is correct Key diagnostic clues: • Motor tic (eye blinking) • Sudden onset • Waxing and waning • Duration < 12 months ➡️ DSM-5 term: Provisional Tic Disorder ➡️ Older term: Transient Tic Disorder ICD-11 / DSM-5 / NICE principles DSM-5 classification • Provisional tic disorder: < 12 months • Persistent tic disorder: > 12 months (motor OR vocal) • Tourette syndrome: motor + vocal > 12 months NICE NG196 • Many childhood tics are transient and require reassurance only • Do not treat unless distressing or impairing ⸻ 5️⃣ ⭐ High-yield facts (Paper B gold) • Transient tics occur in up to 20% of children • Onset typically age 5–7 • Often triggered by stress, fatigue, excitement • Usually self-resolving • Suppressible temporarily • Premonitory urge may appear in older children • No treatment needed unless impairing

Answer 21

✅ Correct answer C. Antipsychotics and α2 agonists ⸻ 3️⃣ Explanation — why correct NICE NG196 treatment hierarchy First-line overall: ➡️ Behavioural therapy (CBIT) Medication if severe impairment: α2-adrenergic agonists • Clonidine • Guanfacine Antipsychotics • Risperidone (commonly first choice) • Aripiprazole • Haloperidol (older option) ❌ Why others are wrong Stimulants • Used for ADHD • Can exacerbate tics (though evidence mixed) • Not primary tic treatment 📘 Maudsley / BNF / NICE notes • Risperidone has strongest evidence among antipsychotics • Aripiprazole increasingly preferred due to tolerability • α2 agonists useful especially when ADHD present • Monitor BP, sedation with clonidine/guanfacine ⸻ ⭐ High-yield facts • Medication reserved for moderate–severe impairment • Behavioural therapy preferred first • Antipsychotics reduce dopamine signalling • α2 agonists reduce noradrenergic tone • Guanfacine preferred over clonidine due to fewer side effects • Sedation and hypotension common with α2 agonists • Antipsychotics → metabolic + extrapyramidal risks ⸻ ⚠️ Exam traps • Thinking SSRIs treat tics • Choosing stimulants when ADHD also present • Forgetting behavioural therapy is first-line overall What is the prognosis for individuals with Tourette syndrome reaching adulthood? A. All have severe lifelong tics B. 65% have no tics or only mild tics C. 10% have improvement D. 90% develop OCD E. Most develop ASPD ⸻ 2️⃣ ✅ Correct answer B. 65% have no tics or only mild tics ⸻ 3️⃣ Explanation ✅ Why correct Tourette typically: • Begins in childhood • Peaks in early adolescence • Improves in late adolescence/adulthood ➡️ About two-thirds improve significantly 📘 Evidence-based course • Tics wax and wane • Stress exacerbates symptoms • ADHD/OCD often drive impairment more than tics ⸻ ⭐ High-yield facts • Peak severity ~10–12 years • Improvement in late adolescence common • Only minority have severe adult tics • ADHD often precedes tics • OCD symptoms may persist into adulthood • Functional impact depends on comorbidities • Stress, fatigue worsen tics

Answer 22

✅ Correct answer C. Deep Brain Stimulation ⸻ Explanation ✅ Why C is correct Deep Brain Stimulation (DBS): • Neurosurgical procedure • Used only in severe refractory Tourette • Not a behavioural or non-pharmacological therapy ⸻ ❌ Why others are wrong A. CBIT (Comprehensive Behavioral Intervention for Tics) ➡️ First-line psychological treatment Includes: • Habit reversal • Relaxation training • Functional assessment ⸻ B. Habit Reversal Training (HRT) Core component of CBIT: • Awareness training • Competing response training ⸻ D. CBT Useful for comorbid anxiety/OCD Sometimes adapted for tic management ⸻ E. Psychoeducation/support Essential part of management Recommended by NICE for all families ⸻ 📘 NICE NG196 key points • Offer behavioural therapy first where available • CBIT is recommended intervention • DBS reserved for severe, treatment-refractory cases ⸻ ⭐ High-yield facts • CBIT = gold-standard behavioural therapy • HRT is core technique of CBIT • Behavioural therapy may reduce tic severity significantly • DBS targets basal ganglia circuits • Used only in extreme cases • Multidisciplinary approach recommended • Family education reduces distress and stigma

Answer 23

Tics • Sudden, non-rhythmic • Suppressible • Premonitory urge • Waxing/waning Stereotypies (ASD) • Rhythmic • Not suppressible • No urge • Earlier onset

Answer 24

Premonitory urge ✔ Sensory discomfort before tic ✔ Relieved by performing tic 👉 Older children/adults report this more often

Answer 25

1️⃣ Tourette syndrome definition (ICD-11 / DSM-5 aligned) ✔ Multiple motor tics AND ≥1 vocal tic ✔ Present > 1 year ✔ Onset before age 18 👉 Exam trap: vocal tic does NOT need to be concurrent with motor tics ⸻ 2️⃣ Persistent (Chronic) Tic Disorder ✔ Motor OR vocal tics (not both) ✔ Duration > 1 year 👉 If both types present → Tourette ⸻ 3️⃣ Provisional (Transient) Tic Disorder ✔ Motor and/or vocal tics ✔ Duration < 12 months 👉 Extremely common in childhood

Answer 26

✅ Correct answer D. Both autism and intellectual disability ⸻ ✅ Why D is correct Prenatal valproate exposure is strongly associated with: ✔ Autism spectrum disorder ✔ Intellectual disability ✔ Developmental delay ✔ Congenital malformations This is one of the most important teratogenic facts for psychiatry exams. 📘 NICE / BNF / Maudsley rules (VERY IMPORTANT) NICE & MHRA Pregnancy Prevention Programme Valproate should NOT be used in women of childbearing potential unless: ✔ No effective alternatives ✔ Pregnancy Prevention Programme in place ✔ Specialist supervision ✔ Informed consent ⸻ Major risks of prenatal valproate exposure • Neural tube defects (e.g., spina bifida) • Craniofacial anomalies • Cardiac defects • Limb abnormalities • Developmental disorders ⸻ BNF / Maudsley key points • Avoid valproate in pregnancy whenever possible • Consider safer alternatives (e.g., lamotrigine for epilepsy/bipolar) • High-dose folate recommended if exposure unavoidable ⸻ ⭐ High-yield facts to memorise • Valproate has one of the highest teratogenic risks among psychotropics • Autism risk significantly increased (≈3–5× baseline) • Cognitive impairment dose-dependent • Neural tube defects risk ~1–2% • Facial dysmorphism may occur • Long-term behavioural problems common • Regulatory restrictions are strict (MHRA UK)

Answer 27

✅ Correct answer: C. 50% ⸻ 🧠 Explanation (Exam-focused) • Childhood-onset Conduct Disorder + callous-unemotional traits = highest risk subtype • Strongly associated with adult antisocial personality disorder (ASPD) • Approximate progression risk ≈ 40–60% Why this matters: 👉 ASPD diagnosis requires evidence of Conduct Disorder before age 15 (DSM-5 criterion) 📘 ICD-11 / DSM-5 / NICE Rules • ASPD diagnosis requires: • Age ≥ 18 • Evidence of Conduct Disorder before age 15 • Childhood-onset CD → worse prognosis than adolescent-onset 📚 DSM-5-TR Personality Disorders 📚 ICD-11 Dissocial Personality Disorder Type tested: Prognosis ⸻ ⭐ High-yield facts • Childhood-onset CD < 10 yrs → worst outcome • Limited prosocial emotions = callous-unemotional subtype • Strong link to psychopathy traits • Poor treatment response • High risk of criminality • High heritability component

Answer 28

✅ Correct answer: B. Oppositional Defiant Disorder (ODD) ⸻ 🔍 Explanation (exam-focused) • Persistent angry/irritable mood • Argumentative/defiant behaviour • Vindictiveness/blaming • Directed toward authority figures • No serious antisocial acts ➡️ Classic ODD presentation. 📘 Diagnostic rules (DSM-5 / ICD-11) ODD requires: • Pattern ≥ 6 months • Angry/irritable mood OR defiant behaviour OR vindictiveness • Functional impairment 👉 Diagnosis question ⸻ ⭐ High-yield facts • Prevalence ≈ 2–5% • Male predominance in childhood • Often comorbid with ADHD • Risk of progression to Conduct Disorder • Parenting interventions first-line 🧠 One-line exam answer ODD involves defiant behaviour without serious violations of others’ rights. ⸻ 🎯 Trigger rule Defiance + arguing + blaming + no antisocial acts → ODD

Answer 29

✅ Correct answer: E. Prevalence 2–5% with higher incidence in boys ⸻ 🔍 Explanation • Most consistent epidemiological estimate • Male predominance in childhood ⭐ High-yield facts • Often co-occurs with ADHD • More common in disadvantaged environments • Gender gap narrows in adolescence • 30–40% progress to Conduct Disorder

Answer 30

✅ Correct answer: B. ODD lacks serious violations of basic rights ⸻ 🔍 Explanation This is the single defining distinction. Conduct Disorder includes: • Aggression • Theft/deceit • Property destruction • Serious rule violations ODD does not. ⸻ ❌ Distractors A. Onset ❌ variable C. Genetics ❌ both genetic D. Male predominance ❌ both male-predominant E. Medication response ❌ behavioural treatment first-line

Answer 31

✅ Correct answer: C. Conduct-Dissocial Disorder ⸻ 🔍 Explanation • Persistent antisocial behaviour • Aggression + theft + deceit • Duration > 12 months • Functional impairment ➡️ Meets ICD-11 criteria. ⸻ ❌ Why others are wrong A. ADHD ❌ impulsive, not deliberate antisocial acts B. ODD ❌ lacks serious violations D. Truancy ❌ single behaviour E. DMDD ❌ mood disorder ⸻ 📘 Diagnostic rules ICD-11 Conduct-Dissocial Disorder: • Persistent pattern violating rights or norms • Aggression / property damage / deceit / rule violation 👉 Diagnosis question ⸻ ⭐ High-yield facts • Childhood-onset → worse prognosis • Risk of adult ASPD • Strong association with substance misuse • Male predominance

Answer 32

✅ Correct answer: D. Conduct Disorder with limited prosocial emotions ⸻ 🔍 Explanation Describes callous-unemotional traits: • Lack of empathy • No remorse • Indifference to punishment • Shallow affect DSM-5 specifier for Conduct Disorder. **Callous-unemotional traits indicate CD with limited prosocial emotions.**

Answer 33

✅ Correct answer: C. More severe and persistent antisocial behaviour ⸻ 🧠 Explanation Callous-unemotional traits =: • Lack of guilt • Lack of empathy • Shallow affect • Indifference to punishment These predict: 👉 Persistent antisocial trajectory 👉 Adult psychopathy risk 👉 Poor response to parenting interventions 📘 DSM-5 Specifier Conduct Disorder — “With Limited Prosocial Emotions” Requires ≥ 2 of: • Lack of remorse/guilt • Callous lack of empathy • Unconcerned about performance • Shallow affect Type tested: Prognosis / risk stratification ⸻ ⭐ High-yield facts • Associated with psychopathy • Lower fear response • Reduced amygdala reactivity • Genetic contribution higher • Poorer outcomes than CD alone • Linked to proactive aggression

Answer 34

✅ Correct answer: A. Disinhibited behaviour ⸻ 🧠 Explanation Disinhibited temperament = • Impulsivity • Poor behavioural control • Acting without considering consequences Core vulnerability for CD. 📘 NICE / Developmental Risk Factors Major CD risk factors: • Harsh/inconsistent parenting • Parental criminality • Social deprivation • Peer delinquency • Temperamental impulsivity ⭐ High-yield facts • CD = interaction of biological + environmental factors • Early temperament predicts later behaviour • Executive function deficits common • Often comorbid with ADHD • Male predominance

Answer 35

✅ Correct answer: D. Conduct disorder ⸻ 🧠 Explanation Conduct Disorder: 👉 Strong environmental influence 👉 Parenting + social context dominate Although CU traits have genetic component, CD overall is less heritable than others listed. ⭐ High-yield facts • CD ≠ purely biological • Environment crucial • Parenting interventions effective • CU subtype more heritable • Social adversity major driver

Answer 36

✅ Correct answer: B. School refusal involves emotional distress at home ⸻ 🧠 Explanation School refusal = anxiety-driven avoidance Key features: • Child stays at home with parents’ knowledge • Marked distress about attending school • Often associated with separation anxiety or depression • Parents attempt to enforce attendance Truancy = behavioural problem: • Absence without parental knowledge • Often out with peers • Linked to conduct disorder School refusal management: • Address underlying anxiety • Graded school reintegration • Family interventions • Avoid punitive approach ⭐ High-yield facts School refusal commonly associated with: • Separation anxiety disorder • Social anxiety • Depression • Somatic complaints • Bullying Truancy associated with: • Conduct disorder • Substance use • Peer delinquency

Answer 37

✅ Correct answer: B. Frequent complaints of feeling unwell ⸻ 🧠 Explanation (Exam-focused) This is school refusal, not truancy. Key features: • Anxiety-driven avoidance • Somatic complaints (headache, abdominal pain, nausea) • Symptoms worse in mornings • Parents usually aware • Child stays at home • No antisocial behaviour Somatisation is a classic presentation. ⸻ ❌ Why other options are wrong A. Consistent avoidance • Seen in both truancy and school refusal C. Evidence of defiance • Suggests ODD/CD or truancy, not anxiety-driven refusal D. Absences without parental knowledge • Classic truancy feature E. Positive engagement with teachers • Not diagnostic ⸻ 📘 NICE / ICD concepts School refusal is not a standalone diagnosis; it reflects underlying disorders such as: • Separation Anxiety Disorder • Social Anxiety Disorder • Generalised Anxiety Disorder • Depression ⭐ High-yield facts School refusal typically includes: • Morning somatic symptoms • Anxiety about separation or performance • Relief once allowed to stay home • Good parent-child relationship • Associated internalising disorders

Answer 38

✅ Correct answer: C. History of offending behaviour ⸻ 🧠 Explanation Truancy = conduct-related absence Typical features: • Antisocial behaviour • Delinquency • Substance use • Poor parental supervision • Child often out of home during school hours 📘 Exam concept Truancy is commonly associated with: • Conduct Disorder • ODD • Substance misuse • Criminal behaviour risk Type tested: Behavioural disorder differentiation ⸻ ⭐ High-yield facts Truancy predicts: • Academic failure • Criminal involvement • Substance misuse • Early school dropout

Answer 39

✅ Correct answer: C. Normal developmental response ⸻ 🧠 Explanation Separation anxiety peaks between: 👉 8 months — 3 years At age 2, anxiety when separated from caregivers is normal. Child recognises caregiver as secure base. ⭐ High-yield facts Separation anxiety disorder diagnosis requires: • Excessive fear • Developmentally inappropriate • Persistent ≥ 4 weeks in children

Answer 40

✅ Correct answer: C. Abnormal separation anxiety ⸻ 🧠 Explanation By age 7: 👉 Separation anxiety should have declined Severe, persistent impairment = Separation Anxiety Disorder. 📘 DSM-5 / ICD-11 criteria for Separation Anxiety Disorder Symptoms may include: • Excessive distress when separated • Refusal to attend school • Fear of harm to caregivers • Nightmares about separation • Physical symptoms Duration: 👉 ≥ 4 weeks in children ⭐ High-yield facts • Onset typically before age 12 • Associated with parental anxiety • Risk factor for adult panic disorder • Common cause of school refusal • Somatic symptoms common

Answer 41

✅ Correct answer: C. Generalized Anxiety Disorder ⸻ 🧠 Explanation (Exam-focused) In adolescents, GAD is the most prevalent anxiety disorder presenting to services. Features: • Excessive, pervasive worry across domains • Physical symptoms (restlessness, fatigue, poor sleep) • Academic and social worries • Chronic course Often under-recognised because symptoms are diffuse. 📘 NICE / ICD-11 / DSM-5 rules 📚 NICE NG134 (Depression & Anxiety in children) 📚 ICD-11: 6B00 Generalized Anxiety Disorder Diagnosis requires: • Excessive anxiety and worry most days • ≥ 6 months duration • Functional impairment Type tested: Epidemiology / Diagnosis ⸻ ⭐ High-yield facts • Female predominance • Often comorbid with depression • Somatic symptoms common • Associated with school refusal • Chronic untreated course 🧠 One-line exam answer 👉 GAD is the most prevalent anxiety disorder in adolescents.

Answer 42

✅ Correct answer: C. Specific Phobia ⸻ 🧠 Explanation Key clues: • Fear tied to specific object (spiders) • Immediate anxiety response • Avoidance behaviour • Early onset • Persistent course Classic specific phobia. 📘 DSM-5 / ICD-11 criteria Specific Phobia requires: • Marked fear of specific object/situation • Immediate anxiety response • Avoidance • Persistence ≥ 6 months • Functional impairment Type tested: Diagnosis ⸻ ⭐ High-yield facts • Often begins in early childhood • Common types: animals, heights, blood/injection • Exposure therapy is first-line treatment • Generally good prognosis

Answer 43

✅ Correct answer: E. School refusal and somatization ⸻ 🧠 Explanation Children often express anxiety through: • Physical symptoms (abdominal pain, headaches) • Avoidance behaviours • School refusal • Withdrawal They may lack insight or vocabulary to verbalise anxiety. ⭐ High-yield facts • Somatisation more common in younger patients • Symptoms peak in mornings • Relief when allowed to avoid stressor • Often mistaken for physical illness

Answer 44

✅ Correct answer: C. Social anxiety disorder ⸻ 🧠 Explanation Selective mutism = severe form of social anxiety. Characteristics: • Normal speech in comfortable settings (e.g., home) • Failure to speak in specific social situations (e.g., school) • Not due to language deficit • Not due to autism alone ⸻ ❌ Why other options are wrong A. ASD • Communication deficits across contexts, not selective B. ADHD • No core speech inhibition D. Intellectual disability • Global language impairment, not situational E. Hearing impairment • Speech issues present in all settings ⸻ 📘 DSM-5 / ICD-11 criteria Selective mutism requires: • Consistent failure to speak in specific situations • Interference with functioning • Duration ≥ 1 month • Not due to lack of language knowledge Type tested: Diagnosis / association ⸻ ⭐ High-yield facts • Onset typically before age 5 • More common in girls • Associated with behavioural inhibition temperament • CBT and exposure therapy effective

Answer 45

✅ Correct answer: C. Ask the child directly about experiences ⸻ 🧠 Explanation (Exam-focused) Children may not spontaneously disclose trauma. Best practice: 👉 Direct, age-appropriate questioning of the child 👉 Supplement with caregiver information 👉 Use child-specific assessment tools Caregiver reports alone often miss: • Internal experiences • Shame-related trauma • Bullying • Abuse ⸻ ❌ Why other options are wrong A. Rely solely on parent history • Many traumas occur outside parental awareness • Parents may minimise or deny B. Use adult assessment tools • Developmentally inappropriate • Poor validity in children D. Wait until adulthood • Delays treatment → worsens prognosis • Contradicts NICE guidance E. Only assess observable behaviours • PTSD involves intrusive memories, nightmares, avoidance, hyperarousal • Internal symptoms are crucial ⭐ High-yield facts Child PTSD presentations often include: • Re-enactment in play • Nightmares without clear content • Behavioural regression • Irritability or aggression • Somatic symptoms

Answer 46

✅ Correct answer: B. High remission rates; 1/3 to 1/2 remit or improve over time ⸻ 🧠 Explanation Childhood OCD often has a better prognosis than adult-onset OCD. Outcomes: • ~30–50% remit or significantly improve • Early treatment improves prognosis • Some persist into adulthood 📘 NICE / evidence base 📚 NICE NG87 (OCD & BDD) Treatment recommendations: • CBT with exposure and response prevention (ERP) = first-line • SSRIs if moderate–severe Type tested: Prognosis ⸻ ⭐ High-yield facts Better prognosis associated with: • Early onset with good insight • Absence of comorbid tics • Good treatment adherence Poorer prognosis: • Severe symptoms • Family accommodation • Comorbid depression

Answer 47

✅ Correct answer: C. Sertraline or Fluvoxamine ⸻ 🧠 Explanation For moderate–severe childhood OCD: 👉 CBT with ERP is first-line 👉 SSRIs added if insufficient response Most evidence in children: • Sertraline • Fluvoxamine ⸻ ❌ Why other options are wrong A. Fluoxetine • Used in depression; evidence for OCD weaker compared with sertraline/fluvoxamine B. Paroxetine • Less favoured due to side effects and withdrawal issues D. Citalopram / E. Escitalopram • Used clinically but not first-line evidence base for pediatric OCD ⸻ 📘 NICE / BNF / Maudsley rules 📚 NICE NG87: Stepwise approach: 1. CBT (ERP) 2. SSRI if moderate–severe or CBT insufficient BNF-C / Maudsley support use of: • Sertraline • Fluvoxamine Type tested: Management ⸻ ⭐ High-yield facts • Higher doses often required for OCD vs depression • Treatment response may take 10–12 weeks • Combined CBT + SSRI most effective • Monitor for activation/suicidality

Answer 48

✅ Correct answer: C. Switch to clomipramine ⸻ 🧠 Explanation (Exam-focused) NICE treatment hierarchy for pediatric OCD: 👉 CBT with ERP → SSRI → Clomipramine (TCA) if SSRI fails Clomipramine is particularly effective for OCD due to strong serotonergic activity. 📘 NICE / BNF / Maudsley rules 📚 NICE CG31 (OCD & BDD) Stepwise management: 1. CBT (ERP) 2. SSRI 3. Clomipramine if SSRI ineffective Type tested: Management ⸻ ⭐ High-yield facts • Clomipramine = TCA with potent serotonin reuptake inhibition • Requires cardiac monitoring (ECG) • Higher side-effect burden than SSRIs • Effective in treatment-resistant OCD ⸻ ⚠️ MRCPsych traps • Choosing another SSRI reflexively • Overusing antipsychotic augmentation • Forgetting clomipramine’s special role

Answer 49

✅ Correct answer: E. Fluoxetine ⸻ 🧠 Explanation Fluoxetine is: 👉 First-line antidepressant for under-18 depression 👉 Effective for OCD 👉 Safest evidence base in adolescents ⸻ ❌ Why other options are wrong A/B. Sertraline or Fluvoxamine • Effective for OCD • Not licensed first-line for depression in under-18s C. Paroxetine • Avoid in children due to increased suicidality risk D. Escitalopram • Used in adults; limited pediatric licensing ⸻ 📘 NICE guidance 📚 NICE NG134 (Depression in children) Fluoxetine = only antidepressant with clear recommendation as first-line medication for moderate–severe depression in youth. Type tested: Management with comorbidity ⸻ ⭐ High-yield facts • Always treat the most impairing condition • Combined CBT + SSRI most effective • Monitor closely for suicidal ideation ⸻ ⚠️ MRCPsych traps • Picking OCD-specific drug rather than depression-licensed drug • Ignoring licensing rules ⸻ 🧠 One-line exam answer 👉 Fluoxetine is first-line antidepressant for depressed adolescents with OCD. ⸻ 🎯 Exam trigger rule Child depression present → Fluoxetine

Answer 50

✅ Correct answer: C. PANDAS ⸻ 🧠 Explanation PANDAS = 👉 Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections Key features: • Abrupt onset OCD and/or tics • Temporal link to Group A strep infection • Behavioral deterioration • Emotional lability • Regression Mechanism: autoimmune attack on basal ganglia. ⭐ High-yield facts • Linked to basal ganglia dysfunction • May relapse with subsequent infections • Treatment may include antibiotics + psychiatric care ⸻ ⚠️ MRCPsych traps • Missing the “sudden onset” clue • Ignoring infection history

Answer 51

✅ Correct answer: E. Psychosis ⸻ 🧠 Explanation Typical PANDAS presentation includes: • OCD • Tics • Anxiety • Emotional lability • Irritability • Behavioral regression Psychosis is rare. ⸻ ❌ Why other options are wrong All A–D are characteristic symptoms. ⸻ 📘 Clinical concept PANDAS symptoms reflect basal ganglia involvement and inflammatory effects on neural circuits. Type tested: Clinical features ⸻ ⭐ High-yield facts • Sleep disturbance common • Urinary frequency/enuresis may occur • Sensory sensitivities possible • Symptoms may wax and wane

Answer 52

✅ Correct answer: C. Ages 10–12 ⸻ 🧠 Explanation (Exam-focused) Childhood OCD shows: 👉 Early onset peak around late childhood / early adolescence 👉 Mean onset ≈ 10 years 👉 Many cases begin between ages 7–12 This corresponds to neurodevelopmental changes and puberty-related vulnerability. ⭐ High-yield facts • Early-onset OCD more likely in boys • Often comorbid with Tourette’s/tics • Childhood OCD may present with family accommodation • Symptoms often hidden due to shame Which disorder has equal sex distribution in adolescents? Options A. ADHD B. Conduct disorder C. OCD D. ASD E. Tourette syndrome ⸻ ✅ Correct answer: C. OCD ⸻ 🧠 Explanation Most childhood psychiatric disorders show male predominance. OCD is a key exception: 👉 Roughly equal male:female ratio in adolescence 👉 In adulthood, slight female predominance ⭐ High-yield facts • Early-onset OCD slightly male-predominant • Adolescent OCD equalizes • Adult OCD slightly female-predominant

Answer 53

✅ Correct answer: C. Nocturnal enuresis ⸻ 🧠 Explanation Nocturnal enuresis = involuntary urination during sleep in children ≥5 years. Key diagnostic criteria: 👉 Age ≥5 years 👉 Occurs during sleep 👉 Not due to medical condition 📘 ICD-11 classification Elimination disorder involving: • Bladder control • Developmental maturation ⸻ ⭐ High-yield facts • Primary vs secondary enuresis • More common in boys • Often familial • May coexist with ADHD

Answer 54

✅ Correct answer: C. 1% ⸻ 🧠 Explanation Daytime wetting (diurnal enuresis) is much less common than nocturnal enuresis. By age 5: 👉 Most children have daytime bladder control 👉 Persistent daytime wetting ≈ 1% ⭐ High-yield facts • Daytime wetting suggests possible pathology • May indicate urinary tract issues or developmental delay • Requires assessment if persistent

Answer 55

✅ Correct answer: E. Nocturnal Enuresis ⸻ 🧠 Explanation (Exam-focused) Primary nocturnal enuresis shows strong familial aggregation: 👉 Often occurs in multiple family members 👉 Similar age of resolution across siblings 👉 No structural or medical pathology This pattern strongly suggests genetic predisposition. Primary nocturnal enuresis = developmental delay in bladder control with genetic influence. ⸻ ⭐ High-yield facts • Risk if one parent affected ≈ 40% • Risk if both parents affected ≈ 70% • More common in boys • Spontaneous remission rate ~15% per year

Answer 56

✅ Correct answer: A. Encopresis ⸻ 🧠 Explanation Encopresis = repeated passage of feces in inappropriate places after developmental age ≥4 years, without organic cause. Key features: 👉 Age ≥4 years 👉 Involuntary or intentional fecal soiling 👉 Often associated with chronic constipation ⭐ High-yield facts • Often due to stool retention → overflow incontinence • May present with large stools and abdominal mass • Requires behavioral + medical management • Can cause social stigma and distress

Answer 57

✅ Correct answer: B. Sleep latency ⸻ 🧠 Explanation Melatonin primarily: 👉 Reduces time taken to fall asleep 👉 Regulates circadian rhythm Sleep latency = interval from going to bed → sleep onset. 📘 NICE context Melatonin often used in: • ASD • ADHD • Neurodevelopmental disorders • Circadian rhythm disorders ⸻ ⭐ High-yield facts • Useful for delayed sleep phase syndrome • Preferred when behavioral measures insufficient • Generally well tolerated • Not a sedative — chronobiotic agent

Answer 58

✅ Correct answer: C. Reading disorder (dyslexia) ⸻ 🧠 Explanation Developmental dyslexia: 👉 Difficulty with phonological processing 👉 Letter–sound mapping problems 👉 Strong genetic component 👉 Normal intelligence Family history is a major clue.

Answer 59

✅ Correct answer: D. 4–10%, males more likely ⸻ 🧠 Explanation Dyslexia is common: 👉 Prevalence ≈ 5–10% of school-age children 👉 More frequently identified in boys Male predominance partly due to referral bias and behavioral visibility. ⭐ High-yield facts • Can persist into adulthood • Associated with increased risk of anxiety and low self-esteem • Often co-occurs with ADHD • Early intervention improves outcomes

Answer 60

✅ Correct answer: C. Specific Learning Disorder in Mathematics (Dyscalculia) ⸻ 🧠 Explanation (Exam-focused) Dyscalculia = specific learning disorder affecting numerical processing. Core features: 👉 Difficulty understanding number magnitude 👉 Problems with arithmetic facts 👉 Poor calculation skills 👉 Below expected performance despite adequate schooling and intelligence ⭐ High-yield facts • Often linked to visuospatial deficits • Associated with right parietal dysfunction • May co-occur with dyslexia or ADHD • Underdiagnosed compared with dyslexia

Answer 61

✅ Correct answer: C. Auditory processing disorder ⸻ 🧠 Explanation Auditory Processing Disorder (APD): 👉 Difficulty processing auditory information despite normal hearing 👉 Problems especially in noisy environments 👉 Improved performance in quiet settings ⭐ High-yield facts • Often detected in school settings • Can mimic inattentiveness • Hearing tests usually normal • Managed with classroom accommodations ⸻ ⚠️ MRCPsych traps • Choosing ADHD because of classroom difficulty

Answer 62

✅ Correct answer: B. 15–20% ⸻ 🧠 Explanation Adolescent mental disorders are common. Population studies consistently show: 👉 ~15–20% of adolescents meet criteria for a psychiatric disorder at any time ⭐ High-yield facts • Anxiety and depression most common • Many disorders begin before age 18 • Suicide leading cause of adolescent mortality • Only a minority receive treatment ⸻ ⚠️ MRCPsych traps • Confusing with prevalence of specific disorders ⸻ 🧠 One-line exam answer 👉 About 1 in 5 adolescents has a mental disorder.

Answer 63

✅ Correct answer: A. Reactive Attachment Disorder (RAD) ⸻ 🧠 Explanation (Exam-focused) Reactive Attachment Disorder is characterized by: 👉 Emotionally withdrawn behaviour toward caregivers 👉 Minimal comfort-seeking when distressed 👉 Reduced positive affect 👉 Failure to form selective attachments 👉 History of severe neglect or inconsistent caregiving Multiple foster placements → classic risk factor. ❌ Why other options are wrong B. DSED • Opposite presentation • Indiscriminate friendliness toward strangers • Not withdrawn C. ASD • Social communication deficits from early development • Not specifically linked to neglect history • Stranger anxiety pattern not diagnostic D. Separation Anxiety Disorder • Excessive distress when separated • This child shows lack of attachment behaviour E. ODD • Defiant/hostile behaviour, not attachment disturbance 📘 ICD-11 / DSM-5 key point RAD requires: ✔ History of insufficient care ✔ Onset before age 5 ✔ Developmental age ≥ 9 months ⸻ ⭐ High-yield facts • Rare but severe disorder • Associated with institutional neglect • Often improves with stable caregiving • Emotional withdrawal is hallmark ⸻ ⚠️ MRCPsych traps • Confusing with ASD • Missing the neglect history

Answer 64

✅ Correct answer: D. Disinhibited Social Engagement Disorder (DSED) ⸻ 🧠 Explanation DSED = indiscriminate sociability. Key features: 👉 Overly familiar behaviour with strangers 👉 No reticence in approaching unfamiliar adults 👉 Lack of checking back with caregiver 👉 Associated with early deprivation 📘 ICD-11 distinction DSED was previously considered a subtype of RAD but now separate. ⸻ ⭐ High-yield facts • Children may wander off with strangers • High risk of exploitation • Often persists even after placement in stable home • Linked to early institutional care

Answer 65

❌ Why other options are wrong A. Conduct disorder • May occur later but not primary attachment disorder C. ADHD • Neurodevelopmental condition, not deprivation-specific D. ASD • Genetic/neurodevelopmental, not caused by environment E. Separation anxiety • Requires attachment bond, which may be absent ⭐ High-yield facts • Orphanage rearing studies strongly support RAD risk • Early adoption reduces risk • Severity correlates with duration of deprivation ⸻ ⚠️ MRCPsych traps • Confusing deprivation effects with ASD ⸻ 🧠 One-line exam answer 👉 Institutional neglect → RAD risk.

Answer 66

✅ Correct answer: D. Digital CBT ⸻ 🧠 Explanation (NICE CG28 / NG134) For mild depression in children/adolescents: 👉 Initial watchful waiting (about 2 weeks) 👉 If symptoms persist → low-intensity psychological therapy Recommended options: ✔ Digital CBT ✔ Group CBT ✔ Guided self-help ✔ Group IPT No medication at this stage. ⸻ ❌ Why other options are wrong A. Immediate antidepressants • Reserved for moderate–severe depression • Fluoxetine first-line if medication needed B. Family therapy • Not primary treatment for mild depression C. Watchful waiting for 6 weeks • Too long; NICE recommends ~2 weeks E. Individual CBT • Used for moderate depression, not mild first-line

Answer 67

✅ Correct answer: D. Watchful waiting ⸻ 🧠 Explanation (NICE NG134 / CG28 — HIGH-YIELD) For mild depression in children (5–18 years): 👉 Initial management = watchful waiting / active monitoring Includes: • Psychoeducation • Supportive interventions • Monitoring risk • Reassessment after ~2 weeks Psychological therapy is introduced only if symptoms persist. ⭐ High-yield facts • Watchful waiting ≠ doing nothing → active monitoring • Assess suicide risk at every review • Maintain school attendance if possible • Involve parents/carers • Duration before escalation: ~2 weeks

Answer 68

✅ Correct answer: C. Sertraline or citalopram ⸻ 🧠 Explanation (NICE — VERY HIGH YIELD) For moderate–severe depression in under-18s: 1️⃣ Psychological therapy ± fluoxetine 2️⃣ If inadequate response → switch to another SSRI Preferred alternatives: 👉 Sertraline 👉 Citalopram ⭐ High-yield facts • Always combine medication with psychological therapy • Monitor for suicidal ideation after starting SSRIs • Family involvement essential • Treatment resistance requires specialist review

Answer 69

✅ Correct answer: B. IPT or family therapy ⸻ 🧠 Explanation If CBT fails and medication is declined: 👉 Offer alternative evidence-based psychotherapies NICE-recommended alternatives include: • Interpersonal Therapy (IPT) • Family therapy • Psychodynamic therapy (less commonly tested) ⭐ High-yield facts • IPT focuses on interpersonal conflicts and role transitions • Family therapy useful when family dynamics contribute • Treatment choice should consider child preference • Multimodal approach often needed

Answer 70

✅ Correct answer: D. Conversion Disorder (Functional Neurological Symptom Disorder) ⸻ 🧠 Explanation Conversion disorder often arises after psychological trauma. Features: 👉 Neurological symptoms without organic basis 👉 Often precipitated by stress or abuse 👉 Symptoms not intentionally produced Examples: • Paralysis • Non-epileptic seizures • Blindness • Movement abnormalities ⭐ High-yield facts • Symptoms often fluctuate • May worsen with attention • Associated with dissociation • Psychological conflict converted to physical symptoms

Answer 71

✅ Correct answer: D. Functional behavioral analysis ⸻ 🧠 Explanation (VERY HIGH-YIELD CAMHS & LD) Aggressive behaviour in intellectual disability is usually: 👉 Communication of unmet needs 👉 Response to environmental triggers 👉 Learned behaviour reinforced over time Functional behavioural analysis (FBA) identifies: • Antecedents (triggers) • Behaviour • Consequences • Maintaining factors 📘 NICE NG11 (Challenging Behaviour & LD) First-line management = behavioural assessment and environmental modification. ⸻ ⭐ High-yield facts • Many behaviours are attention-seeking or escape-maintained • Pain or medical issues often overlooked • Communication difficulties increase aggression risk • Behavioural interventions reduce medication use

Answer 72

✅ Correct answer: C. 35–49 ⸻ 🧠 Explanation (ICD-11 / DSM-5 compatible ranges — HIGH-YIELD) Moderate Intellectual Disability corresponds to: 👉 IQ 35–49 (DSM-5 uses adaptive functioning primarily but IQ ranges still tested) ⭐ High-yield facts • Moderate ID = noticeable developmental delays early in childhood • Can usually learn basic communication and self-care • Often require supervised living • Academic skills limited to elementary level • Social skills basic but meaningful relationships possible

Answer 73

✅ Correct answer: E. 85% ⸻ 🧠 Explanation Mild intellectual disability accounts for: 👉 ~85% of all ID cases ⭐ High-yield facts • Mild ID often not diagnosed until school age • Many individuals live independently • Higher risk of social disadvantage than severe disability • Often associated with environmental factors • Can form families and hold employment

Answer 74

✅ Correct answer: D. Aggression ⸻ 🧠 Explanation (VERY HIGH-YIELD LD PSYCHIATRY) In people with intellectual disability: 👉 Psychological distress often manifests behaviorally Common presentations of PTSD include: • Aggression • Self-injury • Agitation • Challenging behaviour Because: ✔ Limited verbal expression ✔ Communication deficits ✔ Emotional dysregulation ⭐ High-yield facts • PTSD often underdiagnosed in LD • Trauma exposure rates are higher in this group • Behavioural change may be the only clue • Requires trauma-informed assessment • Mislabeling as “behavioural problem” is common

Answer 75

✅ Correct answer: C. Attributing mental health issues to learning disability ⸻ 🧠 Explanation (EXTREMELY HIGH-YIELD PAPER B) Diagnostic overshadowing = 👉 Assuming symptoms are “just part of the disability” 👉 Missing treatable psychiatric or medical conditions Example: • Depression interpreted as “low functioning” • Pain interpreted as “behavioural” • Psychosis overlooked 📘 Why this matters clinically Major cause of: • Delayed treatment • Poor outcomes • Increased morbidity ⸻ ⭐ High-yield facts • Very common in people with ID and autism • Also occurs in physical healthcare • Requires active screening for mental illness • NICE emphasizes careful assessment of new behaviour • Pain and medical illness frequently missed

Answer 76

✅ Correct answer: B. Assessment of general intelligence in school-age children ⸻ 🧠 Explanation The WISC-R (Wechsler Intelligence Scale for Children — Revised) is a standardized psychometric test designed to assess: 👉 General intellectual ability (IQ) in children Typical age range: 👉 6–16 years Provides: • Full-Scale IQ (FSIQ) • Verbal IQ • Performance / non-verbal IQ • Cognitive profile across domains ⸻ 📊 Key psychometric properties • Mean IQ = 100 • Standard deviation = 15 • Norm-referenced ⭐ High-yield facts • WISC is most commonly used IQ test in CAMHS • Splits between verbal and performance skills may suggest learning disorders • Uneven profile may indicate neurodevelopmental disorders • Used for educational planning • Updated versions: WISC-IV, WISC-V (but exam may use WISC-R generically)

Answer 77

✅ Correct answer: B. Ibuprofen ⸻ 🧠 Explanation (VERY HIGH-YIELD LD PSYCHIATRY) In people with intellectual disability: 👉 Behavioral change often reflects untreated physical pain Menstrual pain (dysmenorrhea) can present as: • Aggression • Irritability • Self-injury • Distress Treat the cause: 👉 NSAIDs (e.g., ibuprofen) — first line for dysmenorrhea ⭐ High-yield facts • Pain is frequently under-recognized in LD populations • Communication difficulties mask symptoms • Treating medical causes often resolves behaviour • Regular review of psychotropics recommended • “Diagnostic overshadowing” risk

Answer 78

✅ Correct answer: E. Deaf children of hearing parents ⸻ 🧠 Explanation (VERY HIGH-YIELD DEVELOPMENTAL PSYCHIATRY) Empathy development relies heavily on: 👉 Early language and social communication Deaf children of hearing parents often experience: • Reduced early communication access • Delayed language acquisition • Limited exposure to emotional dialogue This can delay: 👉 Theory of Mind 👉 Social cognition 👉 Empathy skills ⸻ ❌ Why other options are wrong A. Children with ASD • May have deficits in cognitive empathy • But question asks MOST likely population broadly — communication deprivation is key mechanism B. Children with older siblings • Typically enhances social development C. Prematurity • Risk for developmental delay but not specific empathy deficit D. Single-parent households • Not inherently associated with empathy delay ⸻ 📘 Developmental psychology concept Language exposure → internal states understanding → empathy ⸻ ⭐ High-yield facts • Early sign language exposure improves outcomes • Deaf children of deaf parents usually develop normally • Theory of Mind delays documented in language-deprived children • Social-emotional learning linked to communication • Important for CAMHS assessments ⸻ ⚠️ MRCPsych traps • Automatically choosing ASD for empathy questions • Ignoring environmental communication factors ⸻ 🧠 One-line exam answer 👉 Empathy depends on language development.

Answer 79

✅ Answer: C. Oppositional defiant disorder 🧠 Why correct ICD-11: Pattern of negativistic, defiant behaviour toward authority without serious violation of others’ rights. Key feature: NO aggression, destruction, theft ⸻ ❌ Why others are wrong (common distractors) B. Conduct disorder ❌ Requires violation of rights/social norms ✔ Aggression, cruelty, theft, property damage D. DMDD ❌ Severe persistent irritability + temper outbursts ❌ Not primarily oppositional behaviour A. ADHD ❌ Inattention/hyperactivity dominant, not defiance E. ASPD ❌ Cannot diagnose under 18 (ICD-11 / DSM-5) ⸻ 🔥 High-yield facts (5–7) • ODD prevalence: 2–5% • More common in boys • Often progresses to conduct disorder • Parenting interventions = first line (NICE NG87) • No medication for ODD itself • Strong association with ADHD • Symptoms ≥ 6 months required

Answer 80

✅ Answer: D. Separation anxiety disorder ⭐ High-Yield Facts • School refusal + somatic symptoms = classic presentation • Symptoms improve when child stays home • Fear centres on separation from attachment figure

Answer 81

✅ Answer: C. 4 weeks ⭐ High-Yield Facts • ICD-11 duration = ≥ 4 weeks (children) • Shorter duration than most anxiety disorders

Answer 82

✅ Answer: D. Fear of separation from attachment figures ⭐ High-Yield Facts • SAD → separation fear • Social anxiety → scrutiny/embarrassment fear • Both may cause school avoidance

Answer 83

✅ Answer: C. CBT with parental involvement ⭐ High-Yield Facts • Psychological treatment first • Family involvement improves outcomes • Medication reserved for severe cases

Answer 84

✅ Answer: B. Abdominal pain during separation ⭐ High-Yield Facts • GI symptoms most common • Triggered by anticipation of separation • Often leads to repeated medical assessments

Answer 85

✅ Answer: C. Parental anxiety disorder ⭐ High-Yield Facts • Genetic + environmental contribution • Overprotective parenting common • Family-based interventions important

Answer 86

✅ Answer: D. Separation anxiety disorder ⭐ High-Yield Facts • Nighttime separation difficulty is common • Nightmares about separation may occur • Fear centres on loss of caregiver

Answer 87

✅ Answer: C. Reactive attachment disorder ⭐ High-Yield Facts • Core feature = emotionally withdrawn behaviour toward caregivers • Child does not seek or respond to comfort • Requires history of severe neglect or deprivation

Answer 88

✅ Answer: D. Severe neglect or insufficient caregiving ⭐ High-Yield Facts • RAD is caused by pathogenic care • Includes neglect, abuse, repeated caregiver changes, institutional rearing • Without deprivation → diagnosis should NOT be made

Answer 89

✅ Answer: B. 6 months to 5 years ⭐ High-Yield Facts • Must have developmental age ≥ 9 months (capacity for attachment) • Usually identified in early childhood • Rarely diagnosed beyond early school years

Answer 90

✅ Answer: D. Stable, nurturing caregiving environment ⭐ High-Yield Facts • Treatment = improve caregiving quality • Placement stability is crucial • Medication only for comorbidities

Answer 91

✅ Answer: C. Presence of neglect history ⭐ High-Yield Facts • Autism → neurodevelopmental, not caused by neglect • RAD → environmental cause required • Autism shows restricted/repetitive behaviours (not core in RAD)

Answer 92

✅ Answer: B. Nocturnal enuresis 🔥 High-yield facts • Diagnosis > age 5 • Strong genetic component • More common in boys • Desmopressin treatment option • Alarm therapy first line (NICE) • Often resolves spontaneously

Answer 93

✅ Answer: C. GAD ⸻ 🔥 High-yield facts • Prevalence ~4% • More common in females • Often under-treated • Chronic course • Associated with depression • CBT first line • SSRIs if severe

Answer 94

✅ Answer: D. Disinhibited Social Engagement Disorder ⸻ 🔥 High-yield facts • Previously subtype of RAD • Indiscriminate sociability • Poor boundaries • Seen after neglect/institutions • Risk of exploitation • Not autism (social motivation present)

Answer 95

1. ADHD onset before age 12 (DSM-5) 2. Symptoms must be present in ≥2 settings 3. Boys diagnosed more than girls 4. Combined type most common in clinic samples 5. First-line treatment (NICE NG87): methylphenidate 6. Atomoxetine preferred if risk of stimulant misuse 7. Guanfacine useful when tics present 8. ADHD + Tourette → consider clonidine/guanfacine first 9. Stimulants may worsen anxiety transiently 10. Long-acting formulations preferred for adherence

Answer 96

11. Core deficits: social communication + restricted behaviours 12. Symptoms present in early development 13. Language delay common but not required 14. Girls underdiagnosed (camouflaging) 15. Screening tool: M-CHAT (toddlers) 16. Gold-standard assessments: ADOS-2 / ADI-R 17. No medication for core symptoms 18. Risperidone/aripiprazole for severe irritability/aggression 19. High comorbidity with ADHD, anxiety, epilepsy 20. Theory of mind deficit classic cognitive model

Answer 97

21. ODD = defiance WITHOUT serious rights violation 22. Conduct disorder = aggression, theft, destruction 23. ODD prevalence 2–5% 24. CD childhood-onset → worse prognosis 25. Callous-unemotional traits → ↑ risk ASPD 26. CD + CU traits → poor treatment response 27. Parenting programmes first line (NICE) 28. Multisystemic therapy for severe CD 29. ADHD frequently comorbid 30. Antisocial personality disorder cannot be diagnosed <18

Answer 98

• School refusal = anxiety-based - Somatic symptoms common (headache, stomachache) - Parents aware of absence - Child stays home • Truancy = antisocial behaviour - Parents often unaware - Child out with peers - Often associated with conduct disorder

Answer 99

39. Separation anxiety normal at ~2 years 40. Pathological if severe/persistent after ~6–7 years 41. Most common anxiety disorder in adolescents: GAD 42. Selective mutism strongly linked to social anxiety 43. Specific phobia often early childhood onset 44. Panic disorder uncommon pre-puberty 45. School refusal commonly anxiety-driven 46. CBT first-line for most childhood anxiety 47. SSRIs if moderate–severe 48. Avoid benzodiazepines

Answer 100

49. Pediatric OCD remission 1/3–1/2 50. First-line treatment: CBT with ERP 51. SSRIs second line or adjunct 52. Clomipramine if SSRI fails 53. PANDAS = sudden OCD/tics after strep infection 54. Emotional lability common in PANDAS 55. Psychosis rare in PANDAS 56. OCD onset peaks around ages 10–12

Answer 101

57. Reactive Attachment Disorder (RAD): withdrawn 58. Disinhibited Social Engagement Disorder (DSED): overfriendly 59. Both require history of severe neglect 60. RAD → failure to seek comfort 61. DSED → indiscriminate sociability 62. Institutional care = major risk factor

Answer 102

63. Mild depression → watchful waiting first 64. Reassess after ~2 weeks 65. Digital CBT or group CBT recommended next 66. Moderate–severe → fluoxetine first-line SSRI 67. Fluoxetine only antidepressant licensed for under-18 depression (UK) 68. If fluoxetine fails → switch SSRI (sertraline/citalopram) 69. Family therapy important adjunct 70. IPT also effective

Answer 103

76. Nocturnal enuresis diagnosed >5 years 77. Strong genetic component 78. More common in boys 79. Alarm therapy first line 80. Desmopressin if needed 81. Encopresis diagnosed >4 years 82. Often associated with constipation

Answer 104

83. Mild ID IQ ~50–69 84. Moderate ID ~35–49 85. Mild ID ≈ 85% of cases 86. Diagnostic overshadowing = attributing symptoms to ID 87. Behavioural problems common presentation of mental illness in ID 88. Functional behavioural analysis first step in aggression

Answer 105

89. Dyslexia = reading impairment 90. Dyscalculia = math impairment 91. Dyslexia prevalence ~4–10% 92. Boys more commonly identified

Answer 106

93. Melatonin reduces sleep latency 94. Useful in ASD/ADHD sleep problems 95. Good sleep hygiene first

Answer 107

96. PTSD may present with aggression in children 97. Play reenactment of trauma common 98. Ask child directly — don’t rely only on parents 99. Trauma-focused CBT first line

Answer 108

100. Overall psychiatric disorder prevalence in adolescents ≈ 15–20%

Answer 109

✅ Answer: B. Before age 13 Adult onset ≥18 Early-onset schizophrenia (EOS) <18 Very early onset schizophrenia (VEOS) <13 🔥 Why VEOS matters VEOS is: • Very rare • More severe • More neurodevelopmental features • Poorer prognosis • Often insidious onset ⭐ Paper B Pearl 👉 Earlier onset = worse outcome (true across psychosis disorders)

Answer 110

✅ Answer: C. Increased negative symptoms and disorganized behavior ⸻ 🧠 Why this is correct Childhood schizophrenia is more neurodevelopmental: ✔ Social withdrawal ✔ Flat affect ✔ Disorganization ✔ Cognitive impairment ✔ Poor functioning 👉 Positive symptoms may be less florid. ⸻ ❌ Why others are wrong A. More positive symptoms → Adult cases often show more classic delusions/hallucinations ⸻ B. Better prognosis → Opposite: worse prognosis ⸻ D. Rapid response to treatment → Usually treatment-resistant ⸻ E. Acute onset → Typically insidious

Answer 111

✅ Answer: A. ADHD ⸻ 🧠 Why this is correct ADHD–bipolar overlap is HUGE in children: ✔ Comorbidity rates ~60–90% reported ✔ Diagnostic confusion common ✔ Overlapping symptoms: • Hyperactivity • Impulsivity • Distractibility • Emotional lability ⸻ ❌ Why others are wrong B. Anxiety disorders → Common, but not highest C. PTSD → Less specific association D. OCD → Associated but not dominant E. Conduct disorder → Seen but secondary to ADHD comorbidity ⸻ 🔥 KEY EXAM TRAP 👉 Pediatric bipolar ≠ adult bipolar Children often present with: • Chronic irritability • Mixed symptoms • ADHD-like behaviour

Answer 112

✅ Answer: C. Clozapine ⸻ 🧠 GOLD-STANDARD RULE Failure of two adequate antipsychotic trials → Treatment-resistant schizophrenia → CLOZAPINE. 👉 Applies to adolescents too (with specialist monitoring). ⸻ 📘 NICE / Maudsley principle Treatment-resistant schizophrenia = • Lack of response to ≥2 antipsychotics • Adequate dose & duration • One should be a second-generation agent ⸻ ❌ Why others are wrong A. Increase risperidone dose → Already failed trial ⸻ B. Add aripiprazole → Polypharmacy not first choice ⸻ D. ECT → Reserved for severe cases (catatonia, life-threatening) ⸻ E. Quetiapine → Would be third standard antipsychotic trial — not recommended before clozapine ⸻ 🔥 Clozapine Exam Pearls ⭐ Only drug proven effective for TRS ⭐ Reduces suicide risk in schizophrenia ⭐ Requires ANC monitoring ⭐ Side effects: agranulocytosis, myocarditis, seizures

Answer 113

✅ Answer: C. Near normal early development followed by deterioration ⸻ 🧠 Why this is correct (ULTRA-HIGH-YIELD) Autism = early developmental abnormality Schizophrenia = deterioration after normal development 👉 This distinction is one of the most tested CAMHS concepts. ❌ Why other options are wrong A. Mood incongruent symptoms → Seen in psychosis generally, not specific vs ASD B. Catatonia → Can occur in BOTH ASD and schizophrenia 👉 DSM-5 even allows “ASD with catatonia” D. Ritualistic behavior → Classic ASD feature E. Social impairment → Present in both

Answer 114

✅ Answer: B. 1 year 🔥 Additional requirement Symptoms present for most of the time, with no symptom-free period > 2 months ⸻ ❌ Why others are wrong 6 months / 18 months / 3 years → not DSM criteria 2 years → adult criterion only ⸻ ⭐ Exam Pearl Cyclothymia = chronic fluctuating mood symptoms that never meet full hypomania or major depression criteria

Answer 115

✅ Answer: D. Aripiprazole ⸻ 🧠 Why aripiprazole is safest (VERY EXAMINABLE) ✔ Minimal QT prolongation ✔ Lower risk of arrhythmia ✔ Favorable metabolic profile ✔ Partial dopamine agonist ✔ Often preferred in young patients ⸻ ❌ Why others are wrong A. Olanzapine → High metabolic risk (weight, diabetes) ⸻ B. Clozapine → Myocarditis risk + cardiomyopathy risk → Only for treatment-resistant cases ⸻ C. Haloperidol → Significant QT prolongation risk ⸻ E. Quetiapine → Moderate QT effects + hypotension ⸻ ⭐ Cardiac Safety Ranking (Exam-friendly) Safest QT profile among common antipsychotics: 👉 Aripiprazole > Olanzapine ≈ Risperidone > Quetiapine > Haloperidol > Ziprasidone

Answer 116

✅ Answer: B. Substance misuse ⸻ 🧠 Why this is correct Social anxiety → self-medication pathway: ✔ Alcohol ✔ Cannabis ✔ Benzodiazepines ✔ Other substances Often used to reduce performance anxiety. ⸻ ❌ Why others are wrong D. Major depression → Very common comorbidity, but substance misuse risk is particularly high longitudinally. ⸻ A. OCD / E. PTSD → Not primary associations ⸻ C. Schizoid personality disorder → Social detachment ≠ anxiety ⸻ 🔥 Clinical Pearl Social anxiety disorder: 👉 Often begins in early adolescence 👉 High chronicity if untreated 👉 Strong predictor of later alcohol misuse

Answer 117

• Cyclothymia → 1 year (children) • ODD → ≥ 6 months • Conduct disorder → ≥ 12 months • Separation anxiety → ≥ 4 weeks (ICD-11) • Tics → transient < 1 year, chronic > 1 year

Answer 118

✅ Correct answer: C. Depression ⸻ 3️⃣ Exam-focused explanation • Depression is the most prevalent psychiatric disorder after paediatric TBI (≈30–40%) • Can result from: • Direct neurological damage (fronto-limbic circuits) • Psychosocial losses • Academic decline • Reduced functioning • Often emerges months after injury ⸻ ❌ Why other options are wrong (Common distractors) A. Mania • Rare after TBI • Mania may occur with right frontal lesions but uncommon B. ADHD • ADHD-like symptoms common but not the most common psychiatric disorder D. Conduct disorder • Behavioural problems may occur but secondary to executive dysfunction E. ASD • Neurodevelopmental disorder, not acquired post-injury ⸻ 📘 Guideline / Evidence basis • Consistent with neuropsychiatric literature on paediatric TBI outcomes • Depression repeatedly identified as most common disorder ⸻ ⭐ High-yield facts (Paper B gold) 1. Depression occurs in ~30–40% of children after TBI 2. Risk increases with injury severity 3. Can appear months to years later 4. Suicide risk elevated post-TBI 5. Social reintegration difficulties contribute 6. Academic failure is a major driver 7. Family stress strongly influences outcome

Answer 119

✅ Correct answer: B. ADHD-like syndromes ⸻ 3️⃣ Exam-focused explanation • TBI can cause secondary ADHD (acquired ADHD) • Due to frontal lobe injury → executive dysfunction • Symptoms resemble primary ADHD but onset is after injury ⸻ ❌ Why others are wrong A. ASD • Neurodevelopmental disorder present from early childhood C. Schizophrenia • Not a typical paediatric TBI outcome D. Bipolar disorder • Rarely directly caused by TBI E. Personality disorder • Requires long-standing patterns, not acute injury ⸻ 📘 Clinical principle Frontal lobe damage → attentional and behavioural dysregulation. ⸻ ⭐ High-yield facts 1. Secondary ADHD occurs in up to 20–50% of severe TBI cases 2. Associated with frontal and diffuse axonal injury 3. Executive dysfunction is core deficit 4. May respond to stimulant medication 5. Emotional lability common 6. Aggression often co-occurs 7. Distinguished by clear pre-injury functioning

Answer 120

✅ Correct answer: C. Duration of Post-Traumatic Amnesia (PTA) ⸻ 3️⃣ Exam-focused explanation • PTA = period of confusion and inability to form new memories • Reflects ongoing brain dysfunction • Strongest predictor of long-term cognitive outcome ⸻ ❌ Why others are wrong A. GCS score • Useful for acute severity but less predictive long-term B. Loss of consciousness • Important but inferior to PTA D. Age • Influences recovery but not primary predictor E. Headache severity • Non-specific ⸻ 📘 Clinical rule 👉 PTA duration > 24 hours → poorer prognosis ⸻ ⭐ High-yield facts 1. PTA is the single best predictor of cognitive outcome 2. Longer PTA → worse functional recovery 3. PTA reflects hippocampal and diffuse injury 4. Used in severity classification 5. Recovery may continue for years in children 6. Neuroplasticity moderates outcomes 7. PTA correlates with academic difficulties

Answer 121

✅ Correct answer: D. Bipolar disorder ⸻ 3️⃣ Exam-focused explanation Common sequelae of paediatric TBI: ✔ Depression ✔ ADHD-like symptoms ✔ Aggression / irritability ✔ Conduct problems ✔ Emotional dysregulation ❌ Bipolar disorder is NOT a typical outcome. ⸻ ❌ Why others are correct (i.e., true risks) A. Conduct disorder • Executive dysfunction → antisocial behaviours B. ADHD • Secondary ADHD common C. Depression • Most frequent psychiatric disorder E. Aggression • Frontal lobe injury → impulse control deficits ⸻ 📘 Exam pearl 👉 Behavioural dyscontrol is a hallmark of paediatric TBI. ⸻ ⭐ High-yield facts 1. Frontal lobe damage → aggression + impulsivity 2. Secondary ADHD often emerges months later 3. Emotional lability common 4. Social difficulties increase risk of conduct problems 5. Mania uncommon 6. Personality change may occur 7. Environmental factors influence outcome

Answer 122

✅ Correct answer: C. Brain plasticity provides some protection ⸻ 3️⃣ Exam-focused explanation Children have: ✔ Greater neuroplasticity ✔ Better functional recovery potential ✔ Longer recovery window Recovery may continue for up to 5 years post-injury ⸻ ❌ Why other options are wrong A. Recovery limited to 1 year • False — children recover longer than adults B. More severe psychopathology • Generally less severe than adults D. Worse outcomes • Often better outcomes overall E. All require follow-up • Not universally required ⸻ 📘 Neurodevelopment principle 👉 Developing brain can reorganize functions more effectively. ⸻ ⭐ High-yield facts 1. Recovery may continue up to 5 years post-injury 2. Neuroplasticity highest in younger brains 3. Functional reorganization possible 4. However, early injury can disrupt development 5. Academic difficulties may emerge later 6. Outcomes depend on injury severity 7. Family support crucial

Answer 123

✅ Correct answer: B. Mood disorders / Depression ⸻ 3️⃣ Exam-focused explanation • Major depressive disorder is the most prevalent comorbidity • Driven by: • Gender incongruence distress • Minority stress • Bullying / stigma • Family rejection • Social isolation • Suicide risk significantly elevated ⸻ ❌ Why other options are wrong A. Anxiety disorders • Also common but less than depression C. Personality disorders • Not typical in adolescents; caution diagnosing D. Substance use • May occur but not primary comorbidity E. Autism spectrum disorder • Association exists but not most common ⸻ 📘 NICE / clinical perspective 👉 Mental health assessment is essential before gender-affirming interventions. ⸻ ⭐ High-yield facts 1. Depression most common comorbidity ⭐ 2. Suicide attempt rates high 3. Social support strongly protective 4. Anxiety second most common 5. ASD association noted in some cohorts 6. Bullying strongly predictive of distress 7. Treatment improves mental health outcomes

Answer 124

✅ Correct answer: B. Increased risk of self-harm and suicide ⸻ 3️⃣ Exam-focused explanation • BDD carries very high suicide risk • Severe functional impairment common • Often chronic without treatment • Overlaps with OCD spectrum ⸻ ❌ Why other options are wrong A. Resolves spontaneously • False — typically persistent C. No functional impact • Major impairment common (school refusal, isolation) D. Only affects appearance • Causes severe psychological distress E. Rare • Often begins in adolescence ⸻ 📘 ICD-11 / DSM-5 concept 👉 BDD = obsessive preoccupation + repetitive behaviours. ⸻ ⭐ High-yield facts 1. Classified with OCD-related disorders 2. Average onset = adolescence 3. Insight often poor or delusional 4. Cosmetic procedures rarely help 5. Mirror checking common 6. Avoidance behaviours also occur 7. Suicide risk extremely high

Answer 125

✅ Correct answer: C. Fluoxetine ⸻ 3️⃣ Exam-focused explanation • SSRIs are first-line • Fluoxetine commonly used • Higher doses often required (OCD-range) • Clomipramine = second-line ⸻ ❌ Why other options are wrong A. Clomipramine • Effective but not first-line (side effects) B. Venlafaxine • Not first choice D. Mirtazapine • Limited evidence for BDD E. Buspirone • Used for GAD ⸻ 📘 Treatment principle 👉 BDD pharmacology mirrors OCD treatment. ⸻ ⭐ High-yield facts 1. SSRIs first-line ⭐ 2. Higher doses often needed 3. Combined CBT + SSRI most effective 4. Clomipramine if SSRI failure 5. Antipsychotics only for augmentation 6. Cosmetic surgery contraindicated as treatment 7. Poor insight predicts worse outcome

Answer 126

✅ Correct answer: C. Fear of abandonment ⸻ 3️⃣ Exam-focused explanation Core BPD features: ✔ Intense fear of abandonment ✔ Unstable relationships ✔ Identity disturbance ✔ Impulsivity ✔ Self-harm Autism social difficulties are: • Developmental • Not driven by attachment insecurity • Not characterized by frantic abandonment fears ⸻ ❌ Why other options are wrong A. Social difficulties • Present in BOTH ASD and BPD B. Emotional dysregulation • Seen in both conditions D. Repetitive behaviors • Suggest ASD E. Sensory sensitivities • Characteristic of ASD ⸻ 📘 Developmental distinction 👉 ASD = early neurodevelopmental 👉 BPD = personality pattern emerging in adolescence ⸻ ⭐ High-yield facts 1. BPD involves unstable identity 2. Relationships swing between idealization and devaluation 3. Self-harm common 4. ASD lacks abandonment panic 5. ASD social deficits present from early childhood 6. Trauma history common in BPD 7. DBT is evidence-based treatment for BPD

Answer 127

✅ Correct answer: B. Avoid asking directly; allow child to initiate ⸻ 3️⃣ Exam-focused explanation • Trauma-informed care prioritizes: • Safety • Control • Avoiding re-traumatization • Direct probing may overwhelm the child • Allowing disclosure at their pace promotes trust • Use gentle, open-ended approaches ⸻ ❌ Why other options are wrong A. Ask directly • May retraumatize • Not trauma-informed C. Rely solely on family reports • Child’s experience essential D. Questionnaires only • Screening tools ≠ full assessment E. Immediately start therapy • Assessment and readiness needed first ⸻ 📘 NICE / trauma-informed principles 👉 Child autonomy and pacing are central. ⸻ ⭐ High-yield facts 1. Avoid forced disclosure ⭐ 2. Establish safety first 3. Use play-based communication in younger children 4. Caregiver input helpful but insufficient 5. Dissociation may impair recall 6. Repeated questioning can increase distress 7. Trust-building is therapeutic itself

Answer 128

✅ Correct answer: B. Trauma-focused CBT ⸻ TF-CBT is first-line for childhood PTSD: ✔ Psychoeducation ✔ Emotional regulation skills ✔ Cognitive restructuring ✔ Trauma narrative ✔ Gradual exposure ✔ Parent involvement ⸻ ❌ Why other options are wrong A. Psychodynamic • Not first-line evidence-based C. Play therapy only • May help but insufficient alone D. Family therapy alone • Useful adjunct, not primary treatment E. Supportive counseling • Non-specific ⸻ 📘 NICE guidance 👉 Offer trauma-focused CBT to children with PTSD. ⸻ ⭐ High-yield facts 1. TF-CBT = first-line ⭐ 2. Parent involvement improves outcomes 3. Exposure component essential 4. Treatment duration typically 8–16 sessions 5. Effective across abuse types 6. Reduces both PTSD and depressive symptoms 7. Pharmacotherapy not first-line

Answer 129

✅ Correct answer: D. Conversion disorder (Functional Neurological Symptom Disorder) ⸻ 3️⃣ Exam-focused explanation • Conversion disorder commonly linked to trauma • Psychological distress manifests as neurological symptoms • Symptoms not intentionally produced • Often triggered by acute stress ⸻ ❌ Why other options are wrong A. Antisocial PD • Associated with conduct disorder, not specific trauma conversion link B. Schizophrenia • Not trauma-specific etiology C. Bipolar disorder • Biological mood disorder E. ASD • Neurodevelopmental, not trauma-based ⸻ 📘 ICD-11 concept 👉 Functional neurological symptoms without organic cause. ⸻ ⭐ High-yield facts 1. Pseudoseizures common presentation ⭐ 2. Often comorbid PTSD 3. More common in adolescents and females 4. Symptoms worsen with attention 5. Normal neurological investigations 6. Psychological formulation essential 7. Physiotherapy + psychotherapy beneficial

Answer 130

✅ Correct answer: B. Wait for the child’s readiness to discuss trauma ⸻ 3️⃣ Exam-focused explanation • Forced early debriefing can worsen PTSD symptoms • Child must feel safe and in control • Gradual disclosure preferred • Psychological therapy offered when ready ⸻ ❌ Why other options are wrong A. Early debriefing • Evidence shows it may increase distress C. Encourage detailed recall • May retraumatize D. Immediate exposure therapy • Requires preparation and stabilization E. Medication first-line • Not recommended in children ⸻ 📘 NICE guidance 👉 Psychological therapy first-line; avoid compulsory debriefing. ⸻ ⭐ High-yield facts 1. Single-session debriefing NOT recommended ⭐ 2. Stabilization phase important 3. Sleep disturbances common 4. Avoidance is core PTSD symptom 5. Medication reserved for severe cases 6. Family support critical 7. School functioning often affected

Answer 131

✅ Answer: B. IPT or family therapy ⸻ 🧠 Explanation (Exam-focused) When CBT fails AND medication declined: ➡️ NICE recommends alternative psychological therapies Key options: • Interpersonal Therapy (IPT) • Family therapy / systemic approaches Why? • Addresses interpersonal stressors • Works with family dynamics • Evidence-based for adolescent depression ❌ Not simply “more CBT” — consider modality change ❌ Hospitalization only if severe risk ❌ Not “no options”

Answer 132

✅ Answer: C. Multidisciplinary review ⸻ 🧠 Explanation (Exam-focused) NICE pathway for moderate–severe adolescent depression: 1️⃣ Start psychological therapy 2️⃣ Review response after 4–6 sessions 3️⃣ If inadequate → multidisciplinary review 4️⃣ Then consider: • Combined therapy (CBT + fluoxetine) • Alternative treatments • Risk reassessment ➡️ The MDT review determines next step ❌ Do NOT jump straight to medication without review ❌ Discharge inappropriate ❌ Simply increasing therapy intensity may miss risk issues

Answer 133

✅ Answer: C. Combination therapy with psychological intervention plus fluoxetine ⸻ 🧠 Explanation (Exam-focused) NICE (NG134) key point: ➡️ For moderate–severe depression (12–18 yrs) Combination treatment can be offered as an initial option Why? • Faster symptom improvement • Reduced relapse risk • Evidence supports CBT + SSRI Fluoxetine = only antidepressant licensed for depression under 18 ❌ Medication alone not first-line ❌ Psychological therapy alone is also acceptable — but question asks what may be considered as initial treatment ❌ Watchful waiting = mild depression ❌ Hospitalization only if risk/severe impairment

Answer 134

✅ Answer: B. Depression ⸻ 🧠 Explanation (Exam-focused) Key statistics (very testable): • ~70% of children with OCD have comorbidity • Depression most common (~25–30%) • Tic disorders second most common • Anxiety disorders also frequent Why depression? • Chronic distress • Functional impairment • Social isolation • Secondary demoralization ❌ Tic disorders are common but not the most common ❌ ADHD and ASD occur but less frequently ⭐ Exam pearl: OCD + tics → think Tourette spectrum

Answer 135

✅ Answer: B. Degree of avoidance ⸻ 🧠 Explanation (Exam-focused) Behavioral Activation (BA): ➡️ Core model = depression maintained by avoidance + withdrawal Key targets: • Reduced activity • Loss of positive reinforcement • Avoidance of meaningful situations Treatment involves: • Activity scheduling • Increasing rewarding behaviors • Breaking avoidance cycles ❌ Negative cognitions → CBT cognitive model ❌ Early life experiences → psychodynamic ❌ Logic errors → cognitive therapy ⭐ BA = behavioral, not cognitive

Answer 136

✅ Answer: C. Milan systemic family therapy ⸻ 🧠 Explanation (Exam-focused) Milan model hallmark techniques: ✔ Hypothesizing ✔ Circular questioning ✔ Neutral stance ✔ Positive connotation Goal: ➡️ Understand family belief systems and interaction patterns

Answer 137

✅ Answer: C. Structural family therapy ⸻ 🧠 Explanation (Exam-focused) Structural Family Therapy (Salvador Minuchin): ➡️ Core concept = family structure Key features: • Subsystems (parental, sibling, spousal) • Boundaries between subsystems • Hierarchies within the family • Enmeshment vs disengagement • Real-time restructuring of interactions Therapist role = active, directive ⸻ ❌ Milan systemic → focuses on beliefs, communication patterns, hypothesizing ❌ Strategic → problem-focused directives ❌ Narrative → re-authoring stories ❌ Solution-focused → future goals, strengths ⭐ Exam pearl: BOUNDARIES → think MINUCHIN → STRUCTURAL

Answer 138

✅ Answer: B. Idealization/devaluation (splitting) ⸻ 🧠 Explanation (Exam-focused) Splitting = primitive defense mechanism ➡️ Inability to integrate good and bad aspects of self/others Patient alternates between: • Idealization (“You’re perfect”) • Devaluation (“You’re awful”) Drives: • Unstable relationships • Intense anger • Fear of abandonment • Identity disturbance ⸻ ❌ Sublimation → mature defense ❌ Rationalization → neurotic defense ❌ Intellectualization → OCD/anxiety spectrum ❌ Reaction formation → OCD / anxiety ⭐ Ultra-high-yield association: Borderline PD → Primitive defenses → Splitting

Answer 139

Answer: Clonidine Explanation: Alpha-2 adrenergic agonists (clonidine, guanfacine) can treat both ADHD symptoms and tic disorders and are preferred when stimulants may worsen tics.

Answer 140

Answer: Sertraline (age ≥6) or Fluvoxamine (age ≥8) Explanation: These are the SSRIs licensed in the UK for pediatric OCD. CBT with exposure and response prevention remains first-line overall.

Answer 141

Answer: Fluoxetine Explanation: Fluoxetine is licensed for depression in under-18s and is also effective for OCD, making it a suitable choice when both conditions coexist.

Answer 142

Answer: 3 : 1 Explanation: Tourette’s syndrome shows a clear male predominance, similar to many neurodevelopmental disorders.

Answer 143

Answer: At least 1 year Explanation: Diagnostic criteria require multiple motor tics and at least one vocal tic persisting for over 12 months.

Answer 144

Answer: Streptococcal infections Explanation: PANDAS (Paediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus) presents with sudden onset OCD and/or tics following group A streptococcal infection.

Answer 145

Answer: Switch to sertraline Explanation: Fluoxetine is first-line for adolescent depression. If ineffective after an adequate trial, NICE recommends switching to another SSRI (e.g., sertraline or citalopram) under specialist care. Venlafaxine is generally avoided in under-18s due to safety concerns.

Answer 146

Answer: Guanfacine Explanation: Guanfacine (alpha-2A agonist) is a non-stimulant option for ADHD. It is less sedating than clonidine and can be used when stimulants are ineffective or contraindicated.

Answer 147

Answer: ARFID Explanation: Avoidant/Restrictive Food Intake Disorder is strongly associated with autism spectrum disorder due to sensory sensitivities, rigidity, and selective eating patterns without body-image disturbance.

Answer 148

Answer: ADHD (60–90%) Explanation: ADHD frequently co-occurs with pediatric bipolar disorder, creating diagnostic overlap (e.g., hyperactivity, impulsivity, distractibility).

Answer 149

Answer: Substance misuse Explanation: Individuals with social anxiety may use alcohol or drugs to self-medicate anxiety in social situations, increasing risk of later substance use disorders.

Answer 150

Answer: Genomic imprinting Explanation: Prader–Willi syndrome results from loss of paternally expressed genes on chromosome 15q11-q13 (e.g., paternal deletion or maternal uniparental disomy).

Answer 151

Answer: Grimacing Explanation: Simple motor tics are brief, sudden, non-purposeful movements (e.g., eye blinking, facial grimacing). Complex tics are more coordinated and purposeful-appearing.

Answer 152

Answer: Tourette syndrome Explanation: Tics typically begin in early childhood, peak around ages 10–12, and often improve during adolescence.

Answer 153

Answer: ADHD Explanation: ADHD-like symptoms (attention problems, impulsivity) are common sequelae of pediatric traumatic brain injury due to frontal lobe vulnerability.

Answer 154

Answer: CBIT (Comprehensive Behavioral Intervention for Tics) Explanation: NICE recommends CBIT as first-line non-pharmacological treatment for tics when impairment is significant and no major comorbidities require treatment first.

Answer 155

✅ CORRECT ANSWER D. Anorexia nervosa ⸻ 2️⃣ Clear, exam-focused explanation Anorexia nervosa has the highest mortality of all psychiatric disorders. Causes of death: • Medical complications (≈50%) • Suicide (≈20–30%) 📌 Examiner logic: If asked “highest mortality in psychiatry” → always anorexia nervosa. ⸻ 3️⃣ Key mortality figures (Paper B gold) • Overall mortality: 5–10% • Standardised mortality ratio (SMR): ~5–10× • Suicide risk: markedly increased • Risk highest in: • Very low BMI • Long illness duration • Electrolyte abnormalities ⸻ 4️⃣ High-yield facts 1. Anorexia has the highest psychiatric mortality 2. Cardiac arrhythmias are the commonest medical cause 3. Suicide accounts for up to ⅓ of deaths 4. Risk persists even after weight restoration 5. Early intervention improves survival ⸻ 5️⃣ Exam traps • ❌ Confusing with alcohol dependence • ❌ Assuming mortality improves once weight increases • ❌ Ignoring suicide risk ⸻ 6️⃣ One-line exam answer Anorexia nervosa has a 5–10% mortality rate, the highest of any psychiatric disorder. ⸻

Answer 156

Answer: Suggests schizophrenia vs autism Explanation: Autism shows early developmental abnormalities from infancy, whereas schizophrenia typically involves normal early development followed by deterioration (loss of functioning).

Answer 157

Answer: Increased suicide risk — active treatment needed Explanation: Body dysmorphic disorder in young people carries significant risk of self-harm and suicide and rarely resolves spontaneously without intervention.

Answer 158

Answer: Genetic loading Explanation: Autism has high heritability (≈80–90%). Twin studies show strong genetic contribution. Vaccines (e.g., MMR) are not risk factors.

Answer 159

Answer: Depression (~26%) Explanation: Mood disorders are the most frequent psychiatric comorbidity in pediatric OCD; tic disorders are also common (≈17–40%).

Answer 160

Answer: More anxiety than mild ASD Explanation: Greater functional impairment and communication difficulties increase vulnerability to anxiety in severe autism.

Answer 161

Answer: Visual scheduling for autism Explanation: These visual tools show the current activity and the next one, helping transitions and reducing anxiety related to unpredictability.

Answer 162

Answer: Help understand situations in autism Explanation: Individualized narratives describing social situations and expected responses; improve social comprehension and behavior.

Answer 163

Answer: Mirroring movements/vocalizations Explanation: Adult mirrors the child’s behaviors to build engagement, communication, and social reciprocity — especially useful for pre-verbal children.

Answer 164

Answer: Picture Exchange Communication System Explanation: Augmentative communication method where the child exchanges pictures to request items or express needs.

Answer 165

Answer: May reduce height velocity by ~1–2 cm initially Explanation: Stimulants can suppress appetite and slow growth early on, but most children show catch-up growth over time. Long-term adult height impact is minimal.

Answer 166

Answer: Blocks dopamine and noradrenaline reuptake Explanation: Inhibits DAT and NET transporters → increases catecholamines in the prefrontal cortex → improves attention and executive function.

Answer 167

Answer: Prodrug — reduced abuse potential Explanation: Converted to dexamfetamine after GI absorption. Cannot be snorted/injected for rapid effect → lower misuse risk; also longer duration of action.

Answer 168

Answer: Atomoxetine, guanfacine, clonidine Explanation: • Atomoxetine = selective noradrenaline reuptake inhibitor • Guanfacine/clonidine = α2-adrenergic agonists Useful when stimulants ineffective, contraindicated, or poorly tolerated.

Answer 169

Answer: ADOS-2, ADI-R, DISCO Explanation: • ADOS-2 = structured observational assessment • ADI-R = detailed caregiver interview • DISCO = developmental interview Used within multidisciplinary assessment — no single test diagnoses ASD alone.

Answer 170

Answer: Treats comorbidities, not core symptoms Explanation: No medication improves core social-communication deficits. Drugs target associated problems (e.g., irritability, aggression, ADHD symptoms). Risperidone/aripiprazole often used for severe behavioral disturbance.

Answer 171

Answer: CBT Explanation: Psychological therapy is preferred initial treatment. SSRIs (e.g., fluoxetine, sertraline) considered for moderate–severe or non-responsive cases.

Answer 172

Answer: Prodrug — reduced abuse potential Explanation: Converted to dexamfetamine after GI absorption. Cannot be snorted/injected for rapid effect → lower misuse risk; also longer duration of action.

Answer 173

✅ Correct answer: C. IQ <70 3️⃣ Clear, exam-focused explanation (bullet points only) • Why C is correct • Intellectual disability requires significantly below-average intellectual functioning, classically IQ ~<70 (≈2 SD below mean) PLUS impaired adaptive functioning, with onset during the developmental period. • The stem gives: onset in childhood + adaptive impairment + IQ 69 → fits the diagnostic boundary. • Why others are wrong (examiner logic) • A (<80) / B (<75): These thresholds would wrongly include borderline intellectual functioning (not ID). • D (<65) / E (<60): Too strict → would miss many people with mild ID. 4️⃣ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules • What the exam is testing: Diagnosis / definition (core concept) • DSM-5 principle: ID is defined by (1) deficits in intellectual functions + (2) deficits in adaptive functioning + (3) onset in developmental period; severity is based more on adaptive functioning than IQ alone. • ICD-11 principle: “Disorders of intellectual development” similarly require impairments in intellectual and adaptive functioning with developmental onset (severity aligned with functioning). • Key exam framing: IQ <70 is the classic numerical anchor, but don’t diagnose ID on IQ alone. 5️⃣ ⭐ High-yield facts to memorise (3–7 bullets) • Mean IQ ≈ 100, SD ≈ 15 → 2 SD below mean ≈ 70 • ID diagnosis = IQ + adaptive impairment + developmental onset • Severity (mild/moderate/severe/profound) is increasingly based on adaptive functioning • Borderline intellectual functioning = IQ ~70–84 (NOT ID) 6️⃣ ⚠️ Common MRCPsych exam traps • Diagnosing ID using IQ alone without adaptive functioning deficits • Confusing borderline IQ (70–84) with mild ID • Forgetting the developmental onset requirement (vs acquired cognitive impairment) 7️⃣ 🧠 One-line exam answer (memorise verbatim) Intellectual disability requires IQ about <70 plus impaired adaptive functioning with onset in the developmental period. 8️⃣ 🎯 Exam trigger rule If you see lifelong learning difficulties + impaired daily functioning + IQ ~<70 → think ID diagnosis (confirm adaptive deficits + developmental onset).

Answer 174

✅ Correct answer: B. 50–69 3️⃣ Clear, exam-focused explanation (bullet points only) • Why B is correct • Mild ID is classically IQ 50–69 and is the commonest severity group. • Why others are wrong • A (70–85): borderline intellectual functioning, not ID • C/D/E: correspond to moderate/severe/profound ranges respectively (more significant support needs) 4️⃣ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules • What the exam is testing: Diagnosis / severity classification • DSM-5/ICD-11: Severity is primarily based on adaptive functioning, but exam SBAs often still test the traditional IQ bands. 5️⃣ ⭐ High-yield facts to memorise (3–7 bullets) • Mild ID = IQ 50–69 • Accounts for ~85% of people with ID (classic exam figure) • Typical needs: support with complex tasks (money, planning), may live semi-independently with support 6️⃣ ⚠️ Common MRCPsych exam traps • Picking 70–85 (borderline) when you see “mild” • Over-focusing on IQ bands and ignoring that real-world severity is adaptive-functioning-led (DSM-5 emphasis) 7️⃣ 🧠 One-line exam answer (memorise verbatim) Mild intellectual disability is classically IQ 50–69 (with adaptive impairment and developmental onset). 8️⃣ 🎯 Exam trigger rule If you see IQ in the 50s–60s + needs support for complex tasks → think mild ID.

Answer 175

✅ Correct answer: B. 35–49 3️⃣ Clear, exam-focused explanation (bullet points only) • Why B is correct • Moderate ID is classically IQ 35–49 and typically involves more obvious functional impairment with need for supervision. • Why others are wrong • A: mild range • C: severe range • D: profound range • E: borderline (not ID) 4️⃣ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules • What the exam is testing: Severity classification • DSM-5/ICD-11 rule theme: severity best reflected by adaptive functioning, but MRCPsych often tests the traditional IQ bands. 5️⃣ ⭐ High-yield facts to memorise (3–7 bullets) • Moderate ID = IQ 35–49 • Moderate ID often needs support for most daily tasks; can learn routines and basic self-care with training • Classic full set: • Mild 50–69 • Moderate 35–49 • Severe 20–34 • Profound <20 6️⃣ ⚠️ Common MRCPsych exam traps • Confusing moderate (35–49) with severe (20–34) • Choosing based on “support needs” without anchoring to the IQ number provided (exam likes numbers) 7️⃣ 🧠 One-line exam answer (memorise verbatim) Moderate intellectual disability corresponds to IQ 35–49 (with adaptive impairment and developmental onset).

Answer 176

✅ Correct answer: D. 85% ⸻ 3️⃣ Clear, exam-focused explanation • Why D is correct • Mild ID accounts for the vast majority (~85%) of all cases. • Most individuals with ID can achieve basic independence with support. 4️⃣ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules What the exam is testing: Epidemiology / classification • Classic severity distribution (traditional teaching): • Mild ≈ 85% • Moderate ≈ 10% • Severe ≈ 3–4% • Profound ≈ 1–2% ⸻ 5️⃣ ⭐ High-yield facts to memorise • Mild ID = most common by far • Severe/profound cases are rare but more visible clinically • Mild ID often diagnosed later (school difficulties) ⸻ 6️⃣ ⚠️ Common MRCPsych exam traps • Choosing ~50–70% due to misunderstanding “mild” • Confusing population prevalence with severity distribution ⸻ 7️⃣ 🧠 One-line exam answer Approximately 85% of individuals with intellectual disability have mild severity. ⸻ 8️⃣ 🎯 Exam trigger rule If asked “most common severity of ID” → Mild (≈85%)

Answer 177

✅ Correct answer: B. 1.5 : 1 ⸻ 3️⃣ Clear, exam-focused explanation • Why B is correct • ID is about 1.5 times more common in males • Partly due to X-linked conditions (e.g., Fragile X, Lesch-Nyhan) 5️⃣ ⭐ High-yield facts • X-linked causes → increased male prevalence • Male predominance seen across many neurodevelopmental disorders ⸻ 6️⃣ ⚠️ Exam traps • Confusing with autism ratio (~3–4:1 male:female) ⸻ 7️⃣ 🧠 One-line exam answer Intellectual disability is approximately 1.5 times more common in males. ⸻ 8️⃣ 🎯 Exam trigger rule Male predominance + ID → think X-linked contribution

Answer 178

✅ Correct answer: B. Mild intellectual disability ⸻ 3️⃣ Clear, exam-focused explanation • Why B is correct • IQ 60 lies within 50–69 → mild ID 5️⃣ ⭐ High-yield facts Classic IQ bands: • Mild → 50–69 • Moderate → 35–49 • Severe → 20–34 • Profound → <20 ⸻ 6️⃣ ⚠️ Exam traps • Confusing mild with borderline • Ignoring adaptive functioning context

Answer 179

✅ Correct answer: C. IQ score ⸻ 3️⃣ Clear, exam-focused explanation • Why C is correct • IQ measures intellectual functioning, not adaptive functioning • Adaptive behaviour assesses real-world daily functioning • Why others are wrong • All represent key adaptive domains: • Communication • Social skills • Self-care • Community use ⸻ 4️⃣ 📘 Rules What the exam is testing: Diagnostic criteria / assessment components DSM-5 adaptive domains: • Conceptual (language, literacy, money) • Social (interpersonal skills, empathy) • Practical (self-care, daily living) ⸻ 5️⃣ ⭐ High-yield facts • Diagnosis requires BOTH: • Intellectual deficits (IQ) • Adaptive deficits • Severity is based mainly on adaptive functioning ⸻ 6️⃣ ⚠️ Exam traps • Thinking IQ is part of adaptive functioning • Forgetting practical skills domain ⸻ 7️⃣ 🧠 One-line exam answer Adaptive functioning assesses real-world skills, not IQ.

Answer 180

✅ Correct answer: C. Intellectual disability plus mental health problem ⸻ 3️⃣ Clear, exam-focused explanation • Why C is correct • In LD psychiatry, dual diagnosis = ID + psychiatric disorder • Common comorbidities: depression, anxiety, psychosis, autism, ADHD • Why others are wrong • Physical disability ≠ dual diagnosis in psychiatric context • Genetic syndromes do not define dual diagnosis • Family history irrelevant ⸻ 4️⃣ 📘 NICE / ICD-11 / DSM-5 rules What the exam is testing: Terminology / service context • People with ID have significantly higher rates of mental illness • Requires specialist assessment due to communication difficulties ⸻ 5️⃣ ⭐ High-yield facts to memorise • Mental illness prevalence in ID ≈ 2–4× general population • Diagnostic overshadowing is common • Behavioural change may signal psychiatric illness ⸻ 6️⃣ ⚠️ Common MRCPsych exam traps • Confusing with “dual diagnosis” in addiction psychiatry (mental illness + substance misuse) • Assuming physical disability counts ⸻ 7️⃣ 🧠 One-line exam answer In learning disability services, dual diagnosis means intellectual disability with a coexisting psychiatric disorder.

Answer 181

✅ Correct answer: C. Vineland Adaptive Behavior Scales ⸻ 3️⃣ Clear, exam-focused explanation • Why C is correct • Vineland measures adaptive functioning • Domains: • Communication • Daily living skills • Socialisation • Motor skills • Why others are wrong • WAIS/WISC → IQ tests • NART → premorbid intelligence estimate • MMSE → cognitive screening (dementia) ⸻ 4️⃣ 📘 Rules What the exam is testing: Assessment tools DSM-5 diagnosis of ID requires: 1. Intellectual deficits 2. Adaptive deficits 3. Onset in developmental period ⸻ 5️⃣ ⭐ High-yield facts • Adaptive functioning determines severity • Vineland commonly used in clinical practice • Informant-based (parent/carer report) ⸻ 6️⃣ ⚠️ Exam traps • Choosing WISC because question mentions children • Choosing MMSE for “functioning” ⸻ 7️⃣ 🧠 One-line exam answer Vineland Adaptive Behavior Scales measure real-world functioning in intellectual disability.

Answer 182

✅ Correct answer: B. 6–16 years ⸻ 3️⃣ Clear, exam-focused explanation • Why B is correct • WISC-R assesses children aged 6–16 years • Why others are wrong • Younger children → WPPSI • Adults → WAIS • Not valid outside range ⸻ 4️⃣ 📘 Rules What the exam is testing: Neuropsychological assessment tools Wechsler family: • WPPSI → preschool • WISC → school-age children • WAIS → adults ⸻ 5️⃣ ⭐ High-yield facts • WISC provides verbal and performance IQ • Widely used in educational psychology • Essential in ID assessment pathway ⸻ 6️⃣ ⚠️ Exam traps • Confusing WAIS with WISC • Assuming overlap with adolescent/adult ranges ⸻ 7️⃣ 🧠 One-line exam answer WISC assesses intelligence in children aged 6–16 years. ⸻ 8️⃣ 🎯 Exam trigger rule School-age child IQ test → WISC

Answer 183

✅ Correct answer Trisomy 21 ⸻ 3️⃣ Clear, exam-focused explanation Why D is correct • Down syndrome = three copies of chromosome 21 • Most common chromosomal cause of intellectual disability • Typically due to meiotic nondisjunction (maternal origin) Why others are wrong • Monosomy X → Turner syndrome • Trisomy 13 → Patau syndrome • Trisomy 18 → Edwards syndrome • 47,XXY → Klinefelter syndrome ⸻ 4️⃣ 📘 NICE / ICD-11 / DSM-5 rules What the exam is testing: Diagnosis / genetics • ICD-11: Down syndrome = chromosomal disorder due to trisomy 21 • Three forms: Full trisomy (≈95%) Translocation (≈4%) Mosaic (≈1%) ⸻ 5️⃣ ⭐ High-yield facts to memorise • Most common genetic cause of ID • Associated with: AV septal defects Early Alzheimer disease Hypothyroidism Increased leukemia risk • Occurs ≈ 1 in 700–1000 births • Risk strongly increases with maternal age ⸻ 6️⃣ ⚠️ Common MRCPsych exam traps • Confusing with Patau (13) or Edwards (18) • Assuming sex chromosome abnormality • Forgetting mosaic/translocation forms

Answer 184

✅ Correct answer: B. Epicanthic folds and congenital heart defects ⸻ 2️⃣ ✅ Correct answer Epicanthic folds and congenital heart defects ⸻ 3️⃣ Clear, exam-focused explanation Why B is correct • Classic DS facial features + high CHD prevalence • Most typical cardiac lesion: • Atrioventricular septal defect Why others are wrong • Webbed neck → Turner syndrome • Cat-like cry → Cri-du-chat syndrome • Macroorchidism → Fragile X syndrome • Self-hugging → Smith-Magenis syndrome ⸻ 4️⃣ 📘 Rules What the exam is testing: Diagnosis / syndromic recognition Congenital heart disease occurs in ≈ 40–50% of DS cases ⸻ 5️⃣ ⭐ High-yield facts Typical DS physical features: • Hypotonia in infancy • Flat nasal bridge • Upward slanting palpebral fissures • Single palmar crease • Sandal gap toes ⸻ 6️⃣ ⚠️ Exam traps • Confusing genetic syndromes with overlapping ID • Picking Turner due to short stature • Picking Fragile X due to ID ⸻ 7️⃣ 🧠 One-line exam answer Down syndrome classically presents with epicanthic folds and congenital heart defects. ⸻ 8️⃣ 🎯 Exam trigger rule Epicanthic folds + AVSD → think Down syndrome

Answer 185

✅ Correct answer: C. 1 in 900–1000 ⸻ 2️⃣ ✅ Correct answer 1 in 900–1000 ⸻ 3️⃣ Clear, exam-focused explanation Why C is correct • Risk increases exponentially with maternal age • At age 30 → ≈ 1 in 900–1000 ⸻ 4️⃣ 📘 Rules What the exam is testing: Prognosis / epidemiology Maternal age effect due to increased meiotic nondisjunction Typical approximate risks: • Age 20 → ~1 in 1500 • Age 30 → ~1 in 900–1000 • Age 35 → ~1 in 350 • Age 40 → ~1 in 100 ⸻ 5️⃣ ⭐ High-yield facts • Risk rises sharply after 35 • Majority of DS births still occur in younger mothers (population effect) • Screening offered to all pregnancies

Answer 186

✅ Correct answer: C. 80% ⸻ 2️⃣ ✅ Correct answer Approximately 80% of perpetrators are female ⸻ 3️⃣ Clear, exam-focused explanation Why C is correct • FDIA perpetrators are overwhelmingly female • Usually the child’s mother or primary caregiver • Consistent finding across child protection studies ⭐ High-yield facts to memorise • Former name: Munchausen syndrome by proxy • Now termed Factitious Disorder Imposed on Another (FDIA) • Perpetrator usually: • Female (~80–90%) • Mother • Medically knowledgeable • Victims most often young children • High risk of serious harm or death • Often associated with personality disorder traits

Answer 187

✅ Correct answer D. Increase olanzapine to 10 mg ⸻ 3️⃣ Clear, exam-focused explanation ✔️ Why this is correct • 5 mg olanzapine = subtherapeutic starting dose • No improvement ≠ treatment failure yet • Must give adequate dose AND duration • Child is tolerating medication • Therefore → titrate before switching 🔹 BNFC (Children) • Olanzapine starting dose: often 2.5–5 mg • Titrate according to response • Max (12–17 years): 20 mg/day ⸻ 🔹 NICE Psychosis & Schizophrenia in Children • Offer oral atypical antipsychotic • Monitor side effects closely • Adjust dose before changing drug

Answer 188

✅ Correct answer D. Methylphenidate is less effective and more poorly tolerated than in ADHD alone ⸻ 🧾 Exam-focused explanation • Methylphenidate remains first-line pharmacotherapy for ADHD symptoms in ASD • However: • Smaller effect sizes compared with ADHD without ASD • Higher rate of adverse effects • Lower response rates overall • Common adverse effects in ASD: • Irritability • Emotional lability • Sleep disturbance • Appetite suppression • Worsening stereotypies ⭐ High-yield facts to memorise • ADHD occurs in ~30–50% of children with ASD • Response rate to stimulants in ASD ≈ 50% (vs ~70–80% in ADHD alone) • Behavioural interventions remain essential • Guanfacine is particularly useful for: • Hyperactivity • Aggression • Sleep problems • Atomoxetine may help when stimulants poorly tolerated

Answer 189

✅ Answer: C. Offer ADHD-focused group parent-training programme High-yield fact: 👉 Under age 5 → behavioural intervention FIRST LINE 👉 Medication only with specialist approval • NICE NG87: Behavioural interventions are FIRST-LINE for children under 5 • Parent-training programmes target: behaviour management parenting strategies environmental modification • Medication is NOT first-line in preschool children due to: limited evidence higher risk of adverse effects developmental considerations

Answer 190

✅ Correct answer C. Severe intellectual disability ⸻ 🧾 Exam-focused explanation • IQ of 28 falls within the severe range (20–34) • Classification is based on IQ bands (ICD-11 / DSM-5 context) • Individuals with severe ID typically: • Have marked developmental delay • Require substantial support • May perform basic self-care with supervision Why the other options are wrong • ❌ A. Mild ID (IQ 50–69) → Most common (~85% of ID cases) → Often able to live semi-independently • ❌ B. Moderate ID (IQ 35–49) → Can acquire basic communication and self-care skills • ❌ D. Profound ID (IQ <20) → Requires continuous care; minimal conceptual functioning • ❌ E. Borderline intellectual functioning (IQ 70–84) → Not classified as intellectual disability ⭐ High-yield facts to memorise • Mild ID ≈ 85% of all ID cases • Male > female prevalence (X-linked causes e.g., Fragile X) • Dual diagnosis = ID + mental illness • Common comorbidities: epilepsy, autism, sensory impairments • Down syndrome = most common chromosomal cause

Answer 191

✅ Correct answer D. It is associated with complete amnesia for the episode ⸻ 🧾 Exam-focused explanation • This describes sleep terrors (night terrors) — a NREM parasomnia • Key distinguishing feature: complete or near-complete amnesia Core features • Sudden arousal from deep sleep • Intense fear / screaming • Autonomic activation (tachycardia, sweating) • Child difficult to console • No recall the next morning Why the other options are wrong • ❌ A. Occurs during REM sleep → Nightmares occur in REM, not night terrors • ❌ B. More common in adults than children → Much more common in children • ❌ C. Episodes last 2–3 hours → Usually brief (minutes) • ❌ E. Occurs in later part of the night → Occurs in first third of the night (deep N3 sleep) ⸻ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules Topic tested: Diagnosis / Differentiation of parasomnias ICD-11 / DSM-5: Sleep Terror Disorder Key criteria: • Recurrent episodes of abrupt terror arousal • Occur during NREM sleep (slow-wave sleep) • Minimal responsiveness during episode • Amnesia afterward • Significant distress or impairment ⸻ ⭐ High-yield facts to memorise • Peak age: 3–7 years • Occurs in N3 deep sleep • First third of the night • Often family history of parasomnias • Triggers: sleep deprivation, fever, stress • Usually self-limiting

Answer 192

✅ Answer: D. Seek advice from a specialist ADHD service 🔥 NICE rule: 👉 Do NOT prescribe ADHD medication <5 without tertiary input Reason: • Need specialist risk-benefit assessment • Off-label considerations • Close monitoring required

Answer 193

✅ Answer: D. Methylphenidate or lisdexamfetamine For children ≥5 years: 👉 Stimulants are first-line pharmacological treatment NICE: • Try one stimulant for ~6 weeks • If ineffective → switch to the other stimulant Non-stimulants are second-line.

Answer 194

✅ Answer: B. Switch to lisdexamfetamine 👉 Switch to alternative stimulant first

Answer 195

✅ Answer: C. Atomoxetine or guanfacine Atomoxetine • selective noradrenaline reuptake inhibitor Guanfacine • alpha-2A adrenergic agonist • reduces hyperactivity and impulsivity

Answer 196

✅ Answer: B. Switch to lisdexamfetamine 👉 Switch to alternative stimulant first If both fail → non-stimulant Switching within stimulant class is preferred because: • Different mechanisms (dopamine vs dopamine + noradrenaline effects) • Some patients respond to one but not the other

Answer 197

✅ Answer: C. Sudden death in first-degree relative under 40

Answer 198

✅ Answer: C. Stop stimulant medication 👉 Psychosis or mania → STOP stimulants Restart only after specialist review.

Answer 199

✅ Answer: A. Continue medication if benefits outweigh risks Other options include dose reduction or switching to guanfacine/atomoxetine.

Answer 200

✅ Answer: C. Assess need for ongoing treatment and reduce growth effects

Answer 201

✅ Answer: C. Weight every 3 months and then every 6 months thereafter (under 10 years) Additional monitoring: ✔ Height every 6 months ✔ BP & pulse before starting, after dose changes, then 6-monthly

Answer 202

✅ Answer: C. Seek specialist advice before adding antipsychotic Do not offer any of the following medication for ADHD without advice from a tertiary ADHD service: • clonidine for children with ADHD and sleep disturbance, rages or tics • atypical antipsychotics in addition to stimulants for people with ADHD and coexisting pervasive aggression, rages or irritability

Answer 203

✅ Correct answer Aripiprazole ⸻ Clear, exam-focused explanation • Presentation = acute manic episode in an adolescent • ↓ need for sleep • Grandiosity • Pressure of speech / flight of ideas • Risk-taking behaviour • Functional impairment • NICE: First-line pharmacological treatment for acute mania in children/adolescents = atypical antipsychotic • Aripiprazole is licensed and commonly used in paediatric mania • Rapid onset compared with mood stabilisers ⭐ High-yield facts to memorise • Mania in youth often presents with irritability rather than euphoria • ↓ need for sleep without fatigue is highly specific for mania • Atypical antipsychotics = fastest symptom control • Aripiprazole has relatively favourable metabolic profile • Antidepressants alone can precipitate mania • Stimulants can mimic or worsen manic symptoms

Answer 204

Correct answer: B — MECP2 gene mutation on Xq28 Explanation • Rett syndrome is caused by mutations in the MECP2 gene • Located on the X chromosome (Xq28) • Leads to abnormal neuronal maturation and synaptic function

Answer 205

Correct answer: C — Almost exclusively affects females Explanation • X-linked dominant condition, usually sporadic • Males with mutation often die in infancy • Females survive due to second normal X chromosome (mosaicism)

Answer 206

Correct answer: C — Hand wringing Explanation • Loss of purposeful hand use • Replaced by stereotyped movements: Hand wringing Washing movements Finger licking/biting Tapping/slapping

Answer 207

Correct answer: B Explanation • Regression affects both: • Expressive language • Receptive language • Social interaction plateaus

Answer 208

Correct answer: D Explanation • Seizures present in about 75% • EEG abnormalities in almost all patients

Answer 209

Correct answer: D Explanation • Severe intellectual disability persists • Progressive motor impairment • Loss of ambulation common • Minimal or absent speech

Answer 210

Correct answer: D Explanation • Head size normal at birth • Growth slows between 6–12 months • Leads to acquired microcephaly

Answer 211

Correct answer: C — 1 in 50–100 Explanation • Risk of trisomy 21 increases steeply with maternal age • At age 40 → ~1% to 2% risk • Roughly a 10-fold increase compared to age 30

Answer 212

✅ Correct answer: C — 10–15% Explanation • Translocation Down syndrome has much higher recurrence risk • Especially if a parent is a balanced translocation carrier • Requires genetic counselling Key exam facts ⭐ • Free trisomy 21 → low recurrence (~1%) • Robertsonian translocation → high recurrence • Risk depends on which parent carries the translocation (higher if mother) 🧬 Down Syndrome — Must Know • Trisomy 21 • APP gene duplication → Alzheimer risk • Early dementia common • Mosaicism → milder phenotype • Robertsonian translocation → familial cases

Answer 213

✅ Correct answer: C — Amyloid Precursor Protein (APP) Explanation • APP gene located on chromosome 21 • Trisomy 21 → extra copy → excess amyloid-β production • Leads to early Alzheimer pathology High-yield facts 🔥 • Almost all adults with Down syndrome show Alzheimer neuropathology by age 40 • Clinical dementia usually appears in 40s–50s • APP duplication alone can cause early Alzheimer disease

Answer 214

✅ Correct Answer: D — Those affected are often very sensitive to criticism 💡 Explanation (Exam-focused) • Children with GAD tend to be: • Excessively worried about performance and approval • Perfectionistic • Reassurance-seeking • Highly sensitive to criticism or perceived failure • They often fear disappointing parents/teachers This personality style is a classic CAMHS exam clue 🔥 ⸻ ❌ Why the Other Options Are Wrong A. Onset is typically before age 10 — ❌ • GAD in youth usually emerges in late childhood or adolescence • Earlier onset is more typical of: • Separation anxiety disorder • Specific phobias ⸻ B. Significant diurnal variation — ❌ • Diurnal variation (e.g., worse in morning) is characteristic of: 👉 Major depressive disorder • Not a feature of GAD ⸻ C. Sleep is usually unaffected — ❌ • Sleep disturbance is very common in GAD: • Difficulty falling asleep • Restless sleep • Night-time worrying ⸻ E. Symptoms must be present for ≥ 2 weeks — ❌ • Two-week threshold = depressive episode • GAD requires much longer duration

Answer 215

✅ Correct Answer: B — Mild intellectual disability 👉 Full Scale IQ = 62 → within 50–69 range → Mild ID Even the confidence interval (57–69) stays entirely within the mild range. ⸻ 🧩 Why General Ability Index (72) Does NOT Change the Answer • GAI excludes working memory & processing speed • Used when these domains are disproportionately impaired • But diagnostic classification typically uses Full Scale IQ Here: 🧠 FSIQ = 62 → Mild ID 🧠 GAI = 72 → Borderline range Exam rule: Use FSIQ unless clearly invalid 🔥 Ultra-High-Yield Forensic / LD Pearls • ID diagnosis requires BOTH: 1️⃣ IQ ≈ < 70 2️⃣ Impairment in adaptive functioning 3️⃣ Onset in developmental period • WAIS-IV domains: • Verbal comprehension • Perceptual reasoning • Working memory • Processing speed 👉 Marked WM deficit here (52) suggests significant executive difficulties.

Answer 216

✅ Correct Answer: B — Having an affected sibling ⸻ 💡 Exam-Focused Explanation 🧬 Genetics = Dominant Risk Factor (VERY HIGH-YIELD) • Autism spectrum disorder (ASD) is one of the most heritable psychiatric conditions • Having an affected sibling markedly increases risk 👉 Recurrence risk in siblings ≈ 10–20% (much higher than population risk ~1–2%) Twin data: • 👶 Monozygotic twins: ~60–90% concordance • 👶 Dizygotic twins: ~0–10% 🔥 Paper B loves twin concordance numbers. 🔥 Ultra-High-Yield Autism Risk Factors (Know These Cold) Strong evidence: 🧬 Genetic factors (strongest) 👨‍👩‍👧‍👦 Affected sibling 👶 Male sex 👴 Advanced paternal age 🤰 Prenatal factors (e.g., valproate exposure) 🧠 Certain genetic syndromes (Fragile X, TSC) ⸻ 🧠 One-Line Exam Memory Trick 👉 “Autism runs in families → think genes first.”

Answer 217

✅ Correct Answer: D — 70% 💡 Explanation (Exam-Focused) • Down syndrome = trisomy 21 → extra copy of APP gene • Leads to ↑ amyloid-β deposition → Alzheimer pathology • Dementia develops early compared with general population 🧠 Key numbers: • By age 40 → ~70% have clinical dementia • By age 60 → almost universal neuropathology ⸻ 🔥 Why This Is Tested APP gene is on chromosome 21 → classic genetics question. 👉 Paper B loves “gene location → clinical consequence.” 🧬 Down Syndrome — Must Know • Trisomy 21 • APP gene duplication → Alzheimer risk • Early dementia common • Mosaicism → milder phenotype • Robertsonian translocation → familial cases

Answer 218

✅ Correct Answer: B — Mosaicism 💡 Explanation Mosaic Down syndrome: • Only some cells have trisomy 21 • Others are normal (46 chromosomes) • → Milder phenotype • → Higher cognitive function Approx. 1–2% of Down syndrome cases ⸻ ❌ Why Other Options Are Wrong Diagnostic error — unlikely if confirmed genetically Environmental enrichment — helps but doesn’t normalize IQ Robertsonian translocation — usually similar severity to full trisomy Spontaneous improvement — not a real mechanism 🧬 Down Syndrome — Must Know • Trisomy 21 • APP gene duplication → Alzheimer risk • Early dementia common • Mosaicism → milder phenotype • Robertsonian translocation → familial cases

Answer 219

✅ Correct Answer: B — FMR1 💡 Explanation Fragile X syndrome: • CGG trinucleotide repeat expansion • Located on FMR1 gene (X chromosome) • Leads to ↓ FMRP protein → abnormal synaptic development 🧠 Most common inherited cause of intellectual disability 🧠 Fragile X — Must Know • X-linked dominant • CGG repeat expansion • Intellectual disability + autism traits • Long face, large ears, macroorchidism

Answer 220

✅ Correct Answer: D — Discrete episodes separated by normal functioning 💡 Exam-Focused Explanation Kleine–Levin syndrome (KLS) is defined by: • Recurrent episodes of hypersomnia • Episodes last days–weeks • Marked behavioural + cognitive disturbance • Complete return to baseline between episodes 👉 This episodic pattern is the key differentiator. ⸻ 🧠 Why Not the Other Options? A. Excessive daytime sleepiness ✔ Seen in BOTH KLS and narcolepsy B. Onset in adolescence ✔ Both can begin in teens C. Confusion on waking ✔ Can occur in hypersomnia disorders generally E. Family history of hypersomnia ❌ Not characteristic of KLS 🧩 Classic KLS Triad (Exam Pearl) 👉 Hypersomnia + Hyperphagia + Hypersexuality Plus: • Cognitive slowing • Irritability / aggression • Derealisation • Often triggered by infection ⸻ 🧠 Narcolepsy Hallmark Features (Must Know) 👉 Think CHESS mnemonic: • Cataplexy • Hallucinations (hypnagogic/hypnopompic) • Excessive daytime sleepiness • Sleep paralysis • Sleep attacks ⸻ ⭐ Ultra-High-Yield One-Line Takeaway 👉 KLS = episodic hypersomnia with full recovery between episodes 👉 Narcolepsy = chronic disorder with REM dysregulation

Answer 221

✅ Correct Answer: C — X-linked dominant 💡 Explanation • Fragile X is caused by mutation of the FMR1 gene on the X chromosome • Inheritance pattern: X-linked dominant • Males (XY) → more severely affected (only one X) • Females (XX) → milder/variable due to X-inactivation 👉 Unlike classic X-linked recessive disorders, females CAN be affected. ⸻ 🧠 Exam Pearls • Most common inherited cause of intellectual disability • Second most common genetic cause after Down syndrome • Caused by CGG trinucleotide repeat expansion

Answer 222

✅ Correct Answer: C — Length of CGG repeat in FMR1 gene 💡 Explanation Severity correlates strongly with repeat size: 5–44 Normal No disease 55–200 Premutation Carrier; risk of FXTAS / POI 200 Full mutation Fragile X syndrome 👉 Large expansions → gene methylation → FMR1 silencing → ↓ FMRP protein 🔥 Ultra-High-Yield Associations Premutation carriers may develop: • FXTAS (Fragile X–associated tremor/ataxia syndrome) in older men • Premature ovarian insufficiency in women

Answer 223

✅ Correct Answer: B — Fragile X syndrome 💡 Explanation Classic Fragile X phenotype: 🧠 Cognitive / Behavioural • Intellectual disability • Autism spectrum traits • Social anxiety • Gaze avoidance • ADHD symptoms 👤 Facial / Physical • Long narrow face • Large protruding ears • Prominent jaw • Macroorchidism (post-puberty) 👉 Gaze avoidance + long face + large ears = exam buzz trio 👉 Fragile X = X-linked dominant CGG repeat expansion in FMR1 causing intellectual disability with autistic features

Answer 224

✅ Correct Answer: E — 6 weeks 💡 Explanation (NICE NG87 — ADHD) • First-line stimulants in children/young people: 👉 Methylphenidate OR lisdexamfetamine • A proper therapeutic trial requires enough time to: • Titrate dose to optimal effect • Assess symptom response • Monitor side effects • Evaluate functional improvement 👉 NICE guidance: ~6 weeks at adequate dose ⸻ 🧪 Why the other options are wrong • 1 week → Too short for titration and assessment • 10 weeks / 3 months / 6 months → Longer than required before deciding efficacy ⸻ 🔥 Ultra High-Yield ADHD Medication Facts (Paper B gold) 🥇 First-line pharmacological options (age ≥5) • Methylphenidate • Lisdexamfetamine ⸻ 🔄 If first stimulant ineffective ➡️ Switch to the alternative stimulant ⸻ 🧩 Non-stimulant options Used when stimulants not tolerated or ineffective: • Atomoxetine • Guanfacine ⸻ 🚫 Special rule for children <5 years 👉 Medication only with tertiary specialist advice ⸻ 🩺 Pre-medication cardiac assessment needed if: • Personal history of heart disease • Syncope, palpitations, murmur • Family history sudden cardiac death <40 ⸻ 🧠 Exam One-Liner 👉 Stimulant trial for ADHD = 6 weeks at adequate dose

Answer 225

✅ Correct answer: C. Cognitive behavioural therapy (CBT) with ERP Explanation: • NICE recommends CBT with exposure and response prevention (ERP) as first-line for OCD in children — regardless of mild learning disability • Psychological therapy is preferred before medication • Learning disability ≠ automatic indication for pharmacotherapy • EMDR is for PTSD, not OCD • Antipsychotics are not first-line ⭐ Exam pearl: CBT (ERP) = GOLD STANDARD first-line for paediatric OCD

Answer 226

✅ Correct answer: C. Guided self-help with family support Explanation: From NICE stepped-care approach: • Mild OCD → guided self-help first • Moderate–severe → CBT with ERP • Medication only if therapy declined or ineffective

Answer 227

✅ Correct answer: C. SSRI Explanation: • SSRIs are used if CBT is declined or ineffective • First pharmacological option in children Licensed SSRIs for paediatric OCD (UK): ✔ Sertraline ✔ Fluvoxamine ⭐ Fluoxetine preferred if comorbid depression present

Answer 228

✅ Correct answer: D. Fluoxetine Explanation: NICE guidance: • OCD → sertraline or fluvoxamine preferred • BDD → fluoxetine preferred

Answer 229

✅ Correct answer: C. Switch to another SSRI or clomipramine Explanation: • NICE: try another SSRI first • Clomipramine can be used if SSRIs ineffective • Antipsychotics only as augmentation in resistant cases

Answer 230

✅ Correct answer: C. Antipsychotics as monotherapy Explanation: • Antipsychotics may be used ONLY as augmentation • Not recommended alone • MAOIs/SNRIs also not recommended for paediatric OCD

Answer 231

✅ Correct answer: D. Growth restriction ⸻ 📘 Explanation (Exam-Focused) • Stimulants suppress appetite → reduced caloric intake • Chronic use may lead to reduced height and weight gain • Manufacturers list: 👉 “Moderately reduced height gain during prolonged use” ⭐ Therefore growth monitoring is mandatory 🔥 Ultra-High-Yield ADHD Stimulant Side Effects These are the ones examiners LOVE 👇 ⭐ COMMON • Appetite suppression • Weight loss • Growth suppression (height) • Insomnia • Headache • Abdominal pain • Irritability • Tachycardia / ↑ BP

Answer 232

✅ Correct answer: D. Consider drug holiday or dose adjustment

Answer 233

✅ Answer: No. Explanation: Modern evidence shows stimulants do not reliably worsen tics. * Meta-analyses do not support an association between new onset or worsening of tics and psychostimulant use. Exam pearl: 👉 Tics ≠ automatic reason tell to avoid methylphenidate

Answer 234

✅ Answer: Alpha-2 agonist (guanfacine or clonidine) Explanation: These reduce both ADHD symptoms and tics.

Answer 235

✅ Answer: Atomoxetine Explanation: Used when: • Stimulants ineffective • Not tolerated • Contraindicated • Tics problematic • Substance misuse risk

Answer 236

✅ Answer: CBIT (Comprehensive Behavioural Intervention for Tics) Explanation: Behavioural therapy is first-line for isolated tics. ⸻ ❓Second-line treatment for Tourette’s without ADHD if CBIT fails? ✅ Answer: Alpha-2 agonist (clonidine or guanfacine) ⸻ ❓Third-line pharmacological treatment for severe Tourette’s? ✅ Answer: Antipsychotics (e.g., aripiprazole, risperidone)

Answer 237

✅ Answer: Atomoxetine

Answer 238

✅ Answer: Clonidine or guanfacine

Answer 239

✅ Answer: The movement appears purposeful Explanation: • OCD compulsions are goal-directed acts performed to reduce anxiety • Tics are involuntary, sudden, non-purposeful movements or sounds 👉 Key distinction: Purpose vs involuntary discharge

Answer 240

✅ Answer: Compulsions = anxiety-driven, intentional Tics = urge-driven, involuntary

Answer 241

✅ Answer: ≈ 1% ✅ Severe impairment in: • Intellectual functioning • Adaptive functioning • Requires pervasive support • Often associated with major neurological or genetic conditions • Onset before age 18

Answer 242

✅ Correct: It is diagnosed more frequently in boys than in girls Now why the others are wrong: ⸻ ❌ “People with dyslexia tend to have a lower than average IQ” 🚫 WRONG • Dyslexia is a specific learning disorder (SLD) • Intelligence is typically normal or above average • Diagnosis requires that reading ability is significantly below expected for IQ 💎 High-yield concept: 👉 Dyslexia = difficulty in reading despite adequate intelligence and education ⸻ ❌ “It is commonly caused by inadequate educational instruction” 🚫 WRONG • Dyslexia is neurodevelopmental • Has strong genetic and neurobiological basis • Not due to poor schooling, laziness, or lack of effort Poor instruction may worsen performance but does not cause dyslexia 💎 Exam phrase: 👉 Must exclude sensory deficits and inadequate schooling ⸻ ❌ “It occurs in approximately 1% of school-aged children” 🚫 WRONG • Prevalence is much higher ✅ Approximate prevalence: 👉 5–10% of children (Some sources say up to 15%) 1% would be far too low. ⸻ ❌ “It rarely persists into adulthood” 🚫 WRONG • Dyslexia is lifelong • Adults often compensate but reading difficulties persist • Many high-achieving adults still meet criteria 💎 Exam pearl: 👉 Neurodevelopmental disorders do NOT disappear — they evolve

Answer 243

✅ Answer: Foetal Alcohol Syndrome (FAS) ** Alcohol is a teratogen affecting neuronal migration and brain development.** ⸻ 🧠 Explanation (High-Yield) This is a classic exam vignette for FAS. 🔹 Core diagnostic facial triad (must memorise) 👉 Smooth philtrum (becomes long and smooth due to abnormal midline development) 👉 Thin upper lip 👉 Short palpebral fissures This combination is extremely characteristic and heavily tested. ⸻ 🔹 Growth restriction / microcephaly • Head circumference < 3rd percentile • Prenatal and postnatal growth problems common ⸻ 🔹 Neurodevelopmental impairment • Learning difficulties • **ADHD-like symptoms** • Poor executive function • Social problems ⸻ 🔹 Maternal risk clue “Mother struggled during pregnancy” → subtle hint toward alcohol misuse ⭐ Ultra-High-Yield Exam Pearls • FAS = most common preventable cause of intellectual disability • Strong association with ADHD symptoms • Look for growth restriction + facial triad + neurodevelopmental issues

Answer 244

✅ Answer: C — Autism spectrum disorder 🧠 Why: Pica is classically linked to ASD and intellectual disability. Psychiatric / neurodevelopmental: • Autism spectrum disorder ✅ (most exam-relevant) • Intellectual disability • Schizophrenia (less common but testable) Medical / physiological: • Iron deficiency • Zinc deficiency • Pregnancy

Answer 245

✅ Answer: C — 1 month

Answer 246

✅ Answer: False 🧠 Eating non-food items is developmentally normal under age 2.

Answer 247

✅ Answer: B — Bowel obstruction Other important complications: • Lead poisoning • Parasitic infection • Dental damage • Toxic ingestion

Answer 248

✅ Answer: B — Cultural practice DSM-5 requires behaviour not culturally sanctioned.

Answer 249

Answer (not all in screenshot but exam-relevant): • Soil / clay • Paper • Paint / plaster • Chalk • Ice (pagophagia — iron deficiency clue)

Answer 250

👉 Answer: Phenylketonuria (PKU) 💡 Why: Classic metabolic disorder clues: 🍞 Phenylalanine accumulation 🧴 Musty smell 🧑‍🦳 Hypopigmentation (fair skin/hair) ⚡ Seizures 🧠 Severe ID if untreated

Answer 251

👉 Answer: Smith-Magenis syndrome 💡 Why: Signature clues: 🌙 Severe sleep disturbance (inverted melatonin rhythm) 😡 Aggression + temper outbursts 🦷 Self-injury (head banging, biting) 🧠 Moderate ID 👶 Distinctive coarse facial features

Answer 252

👉 Answer: Smith-Magenis syndrome

Answer 253

👉 Answer: Phenylketonuria (PKU) 🚨 Key exam point: PKU is preventable cause of intellectual disability

Answer 254

👉 HGPRT (Hypoxanthine-guanine phosphoribosyltransferase) deficiency 👉X-linked (males!) ⭐ MUST KNOW TRIAD 1️⃣ Self-mutilation (biting lips, fingers) 2️⃣ Movement disorder (dystonia, choreoathetosis) 3️⃣ Hyperuricaemia + gout 🟠 Orange urate crystals in diapers 🧠 Intellectual disability

Answer 255

👉 Deficiency of phenylalanine hydroxylase (autosomal recessive) 🧬 Why? • Converts phenylalanine → tyrosine • Deficiency → toxic phenylalanine accumulation • Leads to neurotoxicity and intellectual disability if untreated 🚨 High-yield features 👶 Intellectual disability if untreated 🧀 Musty/mousy body odour ⚪ Fair skin + hair (↓ melanin) 🧠 Seizures 📉 Microcephaly 👉 Treat with low-phenylalanine diet

Answer 256

👉 Deficiency of β-hexosaminidase A (autosomal recessive lysosomal storage disorder) 🧠 Mechanism Accumulation of GM2 ganglioside in neurons → neurodegeneration 🚨 High-yield features 👶 Developmental regression 👁️ Cherry-red spot on macula 🔊 Hyperacusis (exaggerated startle) 🧠 Severe neurodegeneration ❌ NO hepatosplenomegaly (distinguishes from Niemann-Pick) Common in Ashkenazi Jewish population

Answer 257

ATP7B mutation → impaired copper excretion → ↓ ceruloplasmin 🚨 High-yield features 🟤 Kayser–Fleischer rings 🧠 Psychiatric symptoms (depression, psychosis) 🫀 Liver disease 🌀 Movement disorders (**wing-beating** tremor, dystonia) **Teen with psychiatric symptoms + liver disease + movement disorder** 🔥 Core triad 1. Liver disease 2. Neurological symptoms 3. Psychiatric symptoms 👉 Treat with penicillamine or trientine 🧬 Key investigations • ↓ Ceruloplasmin • ↑ Urinary copper • ↑ Hepatic copper • Kayser–Fleischer rings

Answer 258

👉 Deficiency of tyrosinase 🧠 Mechanism Tyrosine cannot be converted to melanin 🚨 High-yield features ⚪ Hypopigmented skin + hair 👁️ Visual impairment 👁️ Nystagmus ☀️ Photosensitivity 📈 Increased skin cancer risk

Answer 259

✅ Answer: 22q11.2 deletion syndrome (DiGeorge / Velocardiofacial syndrome) 💎 High-yield facts • Strongest known genetic risk factor for schizophrenia • Lifetime psychosis risk ≈ 20–30% • Often presents in adolescence or early adulthood • Associated with intellectual disability and anxiety disorders

Answer 260

✅ Answer: DiGeorge syndrome (22q11.2 deletion) C Cardiac defects (conotruncal) A Abnormal facies T Thymic hypoplasia → immunodeficiency C Cleft palate H Hypocalcemia (parathyroid hypoplasia) 22 Chromosome 22 deletion

Answer 261

✅ Answer: Patau syndrome (Trisomy 13) 💎 Why? • Severe congenital abnormalities • High infant mortality → limited opportunity to diagnose ASD • Other syndromes have stronger ASD links

Answer 262

✅ Answer: Neurofibromatosis type 1 (autosomal dominant) 🧠 NF1 — Ultra High-Yield Facts • Autosomal dominant • Equal male:female ratio • Café-au-lait spots • Neurofibromas • Lisch nodules (iris hamartomas) • Learning difficulties common • Increased ADHD and ASD risk • Risk of optic glioma

Answer 263

👉 Fragile X / Rett / Tuberous sclerosis

Answer 264

✅ Answer: Tuberous sclerosis (autosomal dominant) ⸻ 🧩 Why this is correct Classic multi-system genetic disorder with hamartomas. 🔺 Classic triad (Vogt triad) 👉 Seizures 👉 Intellectual disability 👉 Facial angiofibromas (adenoma sebaceum) 🧠 Tuberous Sclerosis — Ultra High-Yield Facts • Autosomal dominant • Equal male:female ratio • Mutations in TSC1 (hamartin) or TSC2 (tuberin) • Multiple hamartomas affecting brain, skin, kidneys, heart ⸻ 🧠 CNS • Epilepsy (very common) • Infantile spasms (West syndrome) • Intellectual disability • Autism spectrum disorder (strong association) • Cortical tubers & subependymal nodules • Risk of subependymal giant cell astrocytoma (SEGA) ⸻ 🧴 Skin (EXAM GOLD) • Adenoma sebaceum (facial angiofibromas) • Ash-leaf hypopigmented macules (UV lamp helps detect) • Shagreen patch (thickened leathery plaque) • Periungual fibromas ⸻ 🫘 Kidneys • Angiomyolipomas (can bleed) • Renal cysts ⸻ 🫀 Heart • Cardiac rhabdomyomas (often detected prenatally or in infancy) ⸻ ⭐ Behavioural / Psychiatric • ADHD common • Autism very common • Learning difficulties • Behavioural dysregulation

Answer 265

👉 Buzzword combo: “Café-au-lait + axillary freckling” = NF1

Answer 266

☕ Neurofibromatosis Type 1 (NF1) 👉 Buzzword combo: “Café-au-lait + axillary freckling” = NF1

Answer 267

🌳 Tuberous Sclerosis (TS) 👉 Buzzword combo: “Seizures + ash-leaf spots” = TS until proven otherwise

Answer 268

✅ Answer: B. Cardiomyopathy Explanation (high-yield): • Autosomal recessive defect in methionine metabolism • Often due to cystathionine beta-synthase deficiency • Causes thromboembolism, cardiovascular disease • Lens dislocation (downwards), Marfan-like habitus • Intellectual disability common 👉 Key differentiator from Marfan: thrombosis risk + intellectual disability

Answer 269

⭐ Landau-Kleffner Syndrome VERY testable • Acquired epileptic aphasia • Language regression • Seizures • Previously normal development ⸻ ⭐ West Syndrome • Infantile spasms • Often associated with TSC • Hypsarrhythmia on EEG

Answer 270

⭐ Landau-Kleffner Syndrome VERY testable • Acquired epileptic aphasia • Language regression • Seizures • Previously normal development ⸻ ⭐ West Syndrome • Infantile spasms • Often associated with tuberous sclerosis • Hypsarrhythmia on EEG

Answer 271

✅ Answer: C. Thought disorder and complex delusions are more evident 💡 Explanation (Exam Focus) In schizophrenia + intellectual disability: ✔ Complex delusions are usually LESS elaborate, not more ✔ Communication limitations → difficulty expressing abstract beliefs ✔ Thought disorder harder to assess ✔ Behavioural disturbance may dominate presentation 👉 So option C is FALSE → correct answer for “EXCEPT”

Answer 272

✅ Answer: C. Aggression 💡 Explanation (VERY HIGH-YIELD) In ID populations: ➡️ Psychological distress often expressed behaviorally ➡️ Verbal reporting of internal symptoms limited ➡️ Aggression may represent fear, hyperarousal, or re-experiencing 📌 Contrast with general population: • Nightmares, flashbacks, avoidance more typical 👉 Paper B loves “atypical presentations in ID”

Answer 273

✅ Answer: C. Diagnostic overshadowing 💡 Explanation (VERY HIGH-YIELD CONCEPT) Diagnostic overshadowing = classic exam concept ➡️ Clinician assumes symptoms are due to ID rather than a separate disorder ➡️ Leads to underdiagnosis and undertreatment ➡️ Major issue in LD psychiatry

Answer 274

Examiners LOVE these themes: 🔴 Atypical presentations • Depression → irritability, aggression • Anxiety → somatic complaints, agitation • PTSD → aggression • Psychosis → behavioral change rather than delusions

Answer 275

✅ Answer: A. All major psychiatric disorders 💡 Explanation (Ultra-High Yield) Individuals with intellectual disability have increased rates of: • Depression • Anxiety disorders • Psychosis • Behavioral disorders • ASD/ADHD comorbidity • PTSD • Personality vulnerability 👉 Therefore not limited to one category 📌 Paper B pearl: “Mental illness is more common in ID across the board.”

Answer 276

✅ Answer: C. Aggression and self-injury 💡 Explanation (VERY HIGH-YIELD) In ID: ➡️ Emotional distress expressed behaviorally ➡️ Limited verbal ability ➡️ Internal symptoms may not be reported Common atypical signs of depression: • Aggression • Self-injury • Irritability • Behavioral deterioration • Sleep/appetite change 📌 Examiners LOVE this theme.

Answer 277

✅ Correct answer: C. Electroencephalogram (EEG) ✅ Why C is correct (exam logic) • People with intellectual disability (ID) have a higher baseline prevalence of epilepsy than the general population. • Lithium can lower seizure threshold (and can worsen seizure control in vulnerable patients). • If the question explicitly flags “higher seizure risk”, the exam is testing: “What extra thing do you do to assess seizure liability before starting lithium?”

Answer 278

✅ Correct answer: D. Distraction and gradual desensitization ✅ Why D is correct (exam logic) • The exam is testing least restrictive practice + positive behavioural support principles. • For a patient with moderate ID refusing venepuncture, first-line is: Make it understandable Make it predictable Make it tolerable Pair it with reinforcement Gradually build tolerance That’s exactly distraction + gradual desensitization. What “distraction + gradual desensitization” actually looks like (practical) Before the appointment • Easy-read explanation / social story / pictures • Practice with toy needle / cotton ball / tourniquet at home • Choose a quiet setting, minimal waiting time During • Distraction: music/video, squeezing stress ball, preferred item • Stepwise exposure: 1. sit in chair 2. sleeve up 3. tourniquet on briefly 4. alcohol wipe 5. brief touch with blunt object 6. proceed only when tolerated • Reward immediately after (reinforcer) Other supports • Familiar staff member • Choice and control: “left arm or right arm?”, “countdown 5–1?” • Clear stopping rule (“if you raise your hand we pause”) ⭐ High-yield Paper B “rule” When ID + procedure refusal appears: • Start with behavioural/environmental approaches • Escalate to restrictive options only when necessary and justifiable

Answer 279

✅ Correct answer: C. Functional behavioral analysis ✅ Why C is correct (exam logic) • Paper B LOVES this theme: Aggression in ID is often communication / functional / environmental — not “psychiatric until proven otherwise.” • The first step is to understand what function the behaviour serves and what maintains it. Functional behavioural analysis (FBA) = structured assessment using ABC: ✅ A – Antecedent: what happened immediately before? ✅ B – Behaviour: what exactly happens? duration/intensity? ✅ C – Consequence: what happens after? what does the person gain/avoid? Typical “functions” (VERY HIGH-YIELD) Aggression may serve to: • Escape demands / tasks • Access attention / items / activities • Sensory stimulation (self-regulation) • Reduce distress (pain, anxiety, overload) • Communicate unmet needs (hunger, fatigue, toileting, frustration) What you must rule out early (the “don’t miss” list) Before medicating: • Pain: dental, constipation, reflux, otitis, headache • Sleep deprivation • Sensory overload/environment change • Menstrual pain (classic exam angle) • Medication side effects (akathisia, agitation) • Safeguarding issues/trauma • Communication mismatch

Answer 280

✅ Correct answer: C. 20% ✅ Why C is correct (exam logic) • Around 1 in 5 adults with intellectual disability (ID) show self-injurious behaviour (SIB). • This is a classic epidemiology figure frequently tested in Paper B. • Important nuance: prevalence varies by setting and severity. ⭐ High-yield qualifiers the exam expects you to know • Higher in moderate–severe ID • Much higher in institutional settings • Strongly associated with: • Autism • Communication impairment • Sensory impairment • Epilepsy • Male sex 👉 The explanation states up to 50% in institutional care — that’s why option E is a trap.

Answer 281

✅ Correct answer: C. 10–30 years with peak at 15–20 ✅ Why C is correct • SIB typically emerges in childhood or adolescence • Peaks in mid-late adolescence • May persist into adulthood, especially in severe ID or ASD ⭐ Very high-yield risk profile for SIB More common in: • Males • Moderate–severe ID • Autism spectrum disorder • Sensory impairments • Communication difficulties • Epilepsy

Answer 282

✅ Correct answer: D. Epilepsy ✅ Why D is correct • Epilepsy is one of the strongest medical associations with SIB in ID. • Possible mechanisms: • Neurological dysfunction affecting impulse control • Post-ictal agitation • Medication side effects • Pain or discomfort related to seizures • Shared neurodevelopmental pathology 👉 The question stem deliberately includes epilepsy to cue you. ⭐ Other major risk factors (know these!) • Moderate–severe ID (IQ < 50) • Autism spectrum disorder • Communication deficits • Sensory impairment (vision/hearing) • Male sex • Institutional living • Pain / medical conditions • Sleep problems ❌ Why the other options are wrong A. Gender • Male sex is a risk factor, but weaker than epilepsy. B. Age • Adolescent age fits typical onset but is not the strongest predictor. C. Impairments in vision • Important risk factor but again weaker than epilepsy. E. Living situation • Institutionalization increases risk but not as strongly as epilepsy in this context.

Answer 283

✅ Correct answer: C. Head banging ✅ Why C is correct Head banging is the single most common self-injurious behaviour (SIB) in people with intellectual disability. It may involve: • Banging head on walls/floor • Repetitive striking with objects • Often rhythmic • Can cause serious injury (subdural hematoma, skull fracture, retinal damage) 👉 Classic MRCPsych buzzword: “Head banging in moderate–severe ID or autism.” ⸻ ⭐ Other common SIB types (know the hierarchy) Very common: • Head banging ⭐ most common • Self-biting • Skin picking / scratching Also seen: • Hair pulling • Eye gouging (severe cases) • Pica • Hitting other body parts

Answer 284

✅ Correct answer: B. Antecedent, Behavior, Consequence ⸻ ✅ Why B is correct ABC analysis is the core framework for understanding challenging behaviour. It examines: 🅐 Antecedent — What happens BEFORE the behaviour? Triggers / context: • Demand placed • Noise • Pain • Social interaction • Transition between activities ⸻ 🅑 Behavior — What EXACTLY happens? Precise description: • Not “aggression” • But: “hits staff with closed fist 3 times” Objective measurement is key. ⸻ 🅒 Consequence — What happens AFTER? What reinforces the behaviour: Common reinforcers: • Attention • Escape from task • Access to preferred items • Sensory feedback 👉 Behaviour continues because consequences reinforce it. ⸻ ⭐ Paper B ultra-important point ABC analysis helps identify the FUNCTION of behaviour: Four classic functions: 1️⃣ Attention seeking 2️⃣ Escape/avoidance 3️⃣ Access to tangible rewards 4️⃣ Sensory/automatic reinforcement

Answer 285

This is a very examinable area — appears in questions on ID, autism, challenging behaviour, risk, safeguarding, and management. ⸻ 🚨 Definition (Exam-ready) Self-injurious behaviour (SIB) = deliberate behaviour causing physical harm to oneself without suicidal intent 👉 Distinct from: • Suicide attempt ❌ • Self-harm in mood disorders ❌ • Personality disorder self-harm ❌ In ID, SIB is usually communicative / behavioural / sensory, not affective. ⸻ 📊 Prevalence (Paper B numbers to memorise) • ⭐ ~20% of adults with intellectual disability • ⭐ Up to 50% in institutional settings • More common in: • Moderate–severe ID • Autism spectrum disorder • Communication impairment 👉 Expect numbers-based MCQs. ⸻ 👶 Peak Age ⭐ 10–30 years (peak 15–20) Less common in: • Early childhood • Older adulthood ⸻ 🧠 MOST COMMON TYPE ⭐ Head banging — #1 Other frequent forms: 🔹 High frequency • Head banging • Self-biting • Skin picking / scratching • Face slapping • Body hitting 🔹 Moderate frequency • Hair pulling • Eye poking/gouging • Self-pinching 🔹 Less common but important • Pica (dangerous) • Severe tissue damage behaviours 👉 Exam buzzword: “Repetitive head banging in a nonverbal patient with severe ID/autism.” ⸻ ⚡ STRONG RISK FACTORS (Very testable) 🔴 Biological ⭐ Epilepsy — strongest medical association ⭐ Severe or profound ID ⭐ Autism spectrum disorder ⭐ Sensory impairments (vision/hearing) ⭐ Sleep disorders ⭐ Pain conditions ⭐ Genetic syndromes (e.g., Lesch-Nyhan) ⸻ 🔵 Psychological / Developmental • Communication difficulties ⭐ • Cognitive rigidity • Anxiety • Poor emotional regulation • Trauma history ⸻ 🟢 Environmental • Institutional living • Low stimulation • Overstimulation • Inconsistent caregiving • Poor routines ⸻ 🟠 Demographic • Male sex ↑ risk • Younger age groups • Multiple disabilities ⸻ 🧩 FUNCTIONAL CAUSES (EXAM GOLD) Behaviour is usually purposeful, not random. ⭐ Four classic behavioural functions: 1️⃣ Attention seeking 2️⃣ Escape / avoidance of demands 3️⃣ Access to tangible rewards 4️⃣ Sensory stimulation (automatic reinforcement) 👉 Paper B LOVES identifying function. ⸻ 🧠 Medical Causes — MUST RULE OUT FIRST Sudden onset or worsening → think physical problem 🔥 Common hidden triggers • Dental pain ⭐⭐⭐ • Constipation ⭐⭐⭐ • Gastro-oesophageal reflux • Ear infection • Headache • Fracture or injury • Menstrual pain • Sleep deprivation 👉 This appears in MANY exam vignettes. ⸻ 🔍 Assessment — GOLD STANDARD ⭐ Functional Behavioural Analysis Uses the ABC model: 🅐 Antecedent What happens BEFORE behaviour? 🅑 Behaviour What EXACTLY occurs? 🅒 Consequence What happens AFTER that reinforces it? ⸻ 🚑 Immediate Risk Situations High-risk SIB requiring urgent action: • Severe head injury risk • Eye damage risk • Blood loss • Fractures • Rapid escalation • New neurological symptoms ⸻ 💊 Management Principles (Very testable) 🥇 FIRST-LINE → NON-PHARMACOLOGICAL ⭐ Behavioural interventions • Functional behavioural therapy • Positive behaviour support • Environmental modification • Communication aids (PECS, AAC) • Structured routines 👉 NICE strongly prefers behavioural approaches first. ⸻ 🥈 Treat underlying cause • Pain management • Treat medical illness • Correct sensory problems • Improve sleep • Address psychiatric disorder ⸻ 🥉 Pharmacological treatment (if severe) Used when: • Risk is high • Behavioural approaches insufficient • Comorbid mental illness present Possible medications: • Antipsychotics (e.g., risperidone) • SSRIs (if anxiety/OCD features) • Mood stabilisers • Naltrexone (rare specialist use) 👉 Overmedication is a common exam trap. ⸻ 🧬 Syndromes Classically Associated with SIB ⭐ Lesch-Nyhan syndrome — severe self-biting ⭐ Smith-Magenis syndrome ⭐ Cornelia de Lange syndrome ⭐ Rett syndrome ⭐ Autism spectrum disorder ⭐ Tuberous sclerosis (less specific)

Answer 286

✅ Answer: C. Understanding function of behavior and teaching alternatives 🧠 Comprehensive Explanation Positive Behavior Support (PBS) is a cornerstone of modern ID and autism care — heavily emphasized in NICE guidelines. 👉 PBS is NOT about suppressing behaviour — it is about replacing it. 🔑 Core principles of PBS 1️⃣ Functional assessment → What purpose does the behaviour serve? 2️⃣ Environmental changes → Modify environment to reduce triggers 3️⃣ Alternative skills → Teach alternative, adaptive behaviours 4️⃣ Positive reinforcement → Reward appropriate behaviour 5️⃣ Quality of life focus → Improve communication, autonomy, engagement ⸻ ❌ Why other options are wrong • A. Punishment → discouraged; can worsen behaviour • B. Medication management → adjunct only • D. Restraint → last resort, emergency only • E. Isolation → not therapeutic, safeguarding concerns ⸻ ⭐ Exam Pearls (VERY HIGH-YIELD) 🔥 PBS = first-line approach for challenging behaviour in ID 🔥 Focus on prevention + teaching skills 🔥 Reduces need for antipsychotics 🔥 Central to STOMP initiative (UK) 🔥 Based on functional assessment

Answer 287

✅ Answer: B. Systematic manipulation of environmental factors ABA = scientific behavioural therapy based on learning theory. 👉 Behaviour is shaped by consequences and environment. ABA modifies behaviour by manipulating: • Antecedents (triggers) • Reinforcement patterns • Consequences • Environmental structure ⸻ 🔑 Key ABA Tools ⭐ ABC analysis ⭐ Reinforcement schedules ⭐ Prompting & fading ⭐ Shaping ⭐ Extinction ⭐ Token economies 🔥 ABA = behaviourism (Skinner principles) 🔥 Used widely in autism interventions 🔥 Data-driven and measurable 🔥 Focuses on observable behaviour only

Answer 288

✅ Answer: B. Unconditional valuing and teaching through companionship Gentle Teaching is a relationship-based intervention — very different from ABA. 👉 Focus = emotional connection, safety, belonging. ⸻ 🔑 Core concepts ⭐ Unconditional acceptance ⭐ Companionship rather than control ⭐ Teaching through presence ⭐ Emotional security ⭐ Human connection as therapy It assumes challenging behaviour arises from fear, insecurity, trauma, or unmet attachment needs. ⭐ Exam Pearls 🔥 Non-aversive approach 🔥 Used in severe ID and trauma 🔥 Relationship-focused 🔥 No punishment or coercion 🔥 Emphasizes “feeling safe and valued”

Answer 289

✅ Correct Answer: Conduct disorder ⸻ ⭐ Why Conduct Disorder is correct (High-yield exam reasoning) Conduct disorder = serious violation of rights of others or societal norms Key diagnostic clues in vignette: 🔴 Aggression toward people • Physical fights with peers • Bullying and intimidation of siblings 🔴 Serious rule violations • Repeated suspensions from school 🔴 Lack of responsibility / externalization • Justifies violence as “provoked” • Blames others 🔴 Persistent pattern across settings • School + home 🔴 Functional impairment • Poor academic performance 👉 These go far beyond “defiance” — they represent antisocial behaviour

Answer 290

✅ Correct Answer: B. Makaton is used alongside speech, whereas BSL is a full language in its own right ⸻ ⭐ Why this is correct (Paper-B High-Yield) 🔵 Makaton A communication support system, not a language Key features: • Uses speech + signs + symbols together • Supports understanding and expression • Designed to augment spoken language • Grammar follows spoken English • Often simplified vocabulary • Used in people with communication difficulties 👉 Think: “Speech first — signs help” ⸻ 🟣 British Sign Language (BSL) A complete natural language Key features: • Independent language • Own grammar and syntax • Not based on spoken English word order • Can be used without speech • Native language of many Deaf people 👉 Think: “Sign language = real language”

Answer 291

The correct answer is 5%. Nocturnal enuresis, or bedwetting, is a common condition in children. According to the National Institute for Health and Care Excellence (NICE) guidelines, approximately 5% of 10-year-olds experience nocturnal enuresis at any one time. This percentage decreases as the child grows older with an annual resolution rate of about 15%.

Answer 292

❌ Family therapy ✅ Multimodal intervention ⭐ Correct Answer: Multimodal intervention 🔎 Explanation (NICE CG158 — as in screenshot) For adolescents (11–17 years) with moderate–severe conduct disorder: ➡️ Especially when behaviour is: • Persistent • Across multiple settings • Associated with offending • High risk of re-offending • Not responsive to lower-intensity treatments 👉 NICE recommends multimodal interventions with a family focus These typically involve: • Young person • Parents/carers • School • Youth justice services • Community agencies 🎯 Target = criminogenic risk factors + systemic problems — Conduct Disorder Management (Paper B GOLD) 👶 Age 3–11 ➡️ FIRST-LINE = Parent training programmes ⸻ 👧 Age 9–14 (overlap zone) ➡️ Child-focused CBT-type programmes 👉 Used if parent programmes not feasible ⸻ 🧑 Age 11–17 (moderate–severe / persistent / offending) ➡️ Multimodal intervention with family focus ⸻ 💊 Medication NOT routine. 👉 Risperidone may be used ONLY when: • Severe aggression • Other approaches failed • Careful monitoring required

Answer 293

✅ Child-focused CBT programme ⸻ ⭐ Correct Answer: Child-focused CBT programme 🔎 Explanation Normally for ages 3–11: ➡️ Parent training is FIRST-LINE But here: ❗ Parent cannot participate → parent intervention not feasible NICE allows: 👉 Child-focused programmes in overlap age range (9–14) These typically target: • Anger regulation • Problem-solving skills • Social cognition • Behavioural control 🎯 Pragmatic alternative when ideal treatment cannot be delivered ❌ Why parent training not appropriate • Requires parental attendance • Would likely fail due to non-engagement • NICE emphasises feasibility — Conduct Disorder Management (Paper B GOLD) 👶 Age 3–11 ➡️ FIRST-LINE = Parent training programmes ⸻ 👧 Age 9–14 (overlap zone) ➡️ Child-focused CBT-type programmes 👉 Used if parent programmes not feasible ⸻ 🧑 Age 11–17 (moderate–severe / persistent / offending) ➡️ Multimodal intervention with family focus ⸻ 💊 Medication NOT routine. 👉 Risperidone may be used ONLY when: • Severe aggression • Other approaches failed • Careful monitoring required

Answer 294

✅ Group-based parent training ⸻ ⭐ Correct Answer: Group-based parent training 🔎 Explanation For children aged 3–11 with conduct disorder: 👉 Parent-based interventions are FIRST-LINE —even when behaviour is severe Why? • Young children’s behaviour is strongly shaped by parenting patterns • Targets coercive cycles within the family • Improves consistency and boundaries • Produces long-term behavioural change Typical programme characteristics (from NICE): • Social learning model • Modelling, rehearsal, feedback • Group of ~10–12 parents • 10–16 sessions • 90–120 minutes each • Include both parents if possible ❌ Why child-focused therapy not first-line here • Parent-level change is more effective in younger children • Behaviour originates in home environment contingencies — Conduct Disorder Management (Paper B GOLD) 👶 Age 3–11 ➡️ FIRST-LINE = Parent training programmes ⸻ 👧 Age 9–14 (overlap zone) ➡️ Child-focused CBT-type programmes 👉 Used if parent programmes not feasible ⸻ 🧑 Age 11–17 (moderate–severe / persistent / offending) ➡️ Multimodal intervention with family focus ⸻ 💊 Medication NOT routine. 👉 Risperidone may be used ONLY when: • Severe aggression • Other approaches failed • Careful monitoring required

Answer 295

➡️ Requires selective attachment capacity • Selective attachments normally develop around 7–9 months • Before ~12 months, attachment patterns are not reliable • Therefore RAD diagnosis is not valid in younger infants 👉 ICD-11 explicitly states: ⭐ RAD should not be diagnosed before 12 months Because: • Attachment system not fully developed • Behaviours may reflect normal developmental stage • Diagnosis must be developmentally informed 🧠 Paper B phrasing to remember: “Think developmentally, not just chronologically.” ⸻ ❌ Why the Other Options Are Wrong (HIGH-YIELD) A. “Commonly misdiagnosed as ADHD” ❌ Not an ICD diagnostic criterion or defining feature. ⸻ C. “Symptoms must be evident by age 3” ❌ This applies to Disinhibited Social Engagement Disorder (DSED) in some descriptions — not RAD specifically. ⸻ D. “Willingness to go off with unfamiliar adults” ❌ 🚨 THIS IS THE BIG TRAP ➡️ That behaviour = Disinhibited Social Engagement Disorder (DSED) NOT Reactive Attachment Disorder ⸻ E. “Can be diagnosed with ASD” ❌ RAD diagnosis requires symptoms not better explained by ASD. Autism involves: • Social reciprocity deficits • Communication differences • Restricted behaviours RAD involves: • Attachment disturbance due to neglect • Emotional withdrawal ICD-11 emphasizes differential diagnosis. ** ICD-11 cautions against diagnosing RAD when the social and emotional difficulties are better explained by autism spectrum disorder. ** While both conditions may involve impaired social reciprocity, their aetiology is different. Autism reflects a neurodevelopmental condition, whereas RAD arises from grossly inadequate caregiving in the context of a child who had the capacity to form selective attachments. This distinction is essential to avoid diagnostic overshadowing and inappropriate safeguarding conclusions.

Answer 296

✅ Correct Answer ⭐ Approximately 20–30% ⸻ 🔎 Exam-Focused Explanation In the general population, epilepsy prevalence is about: ➡️ ~0.5–1% But in people with intellectual disability: ➡️ Prevalence rises dramatically ➡️ Around 20–30% overall 🧠 Why It’s So High Shared neurodevelopmental causes: • Structural brain abnormalities • Genetic syndromes • Perinatal injury • Tuberous sclerosis • Fragile X • Cerebral palsy ⸻ 🎯 Paper B Pattern Recognition If you see: • ID + head banging • ID + aggression • ID + sudden behavioural change • ID + regression 👉 Always consider epilepsy (especially focal seizures) ⸻ ⭐ Ultra-High-Yield Memory Hook “One in four people with intellectual disability have epilepsy.”

Answer 297

✅ Correct Answer ⭐ D. Emotional abuse is more likely to cause subsequent mental health difficulties than physical abuse “Invisible abuse → deepest scars.” ⸻ 🔎 Why This Is Correct (Paper B reasoning) Emotional abuse is: • Often chronic and pervasive • Targets core self-concept (“you are worthless”) • Internalised → long-term psychological harm • Frequently co-occurs with neglect • Less visible → less intervention → prolonged exposure Strong associations with: • Depression • Anxiety disorders • PTSD • Personality pathology • Low self-esteem • Self-harm • Attachment problems 👉 Evidence shows emotional maltreatment predicts mental health problems at least as strongly — and often more strongly — than physical abuse. ⸻ ❌ Why the Other Options Are Wrong ❌ A. “Depression but not conduct problems” False. Child abuse is associated with both internalising AND externalising disorders: • Depression • Anxiety • PTSD • Conduct disorder • Substance misuse • Antisocial behaviour ⸻ ❌ B. “Strong causal relationship” Tempting but incorrect wording. Research shows: • Strong association • Increased risk • Multifactorial causation But NOT a simple deterministic causal link (Paper B is picky about causality claims). ⸻ ❌ C. “Majority of abusers were abused” Classic myth ❗ Reality: • Some perpetrators have abuse histories • BUT most abused children do NOT become abusers • Majority of abusers were not abused Exam trap = avoid “cycle of abuse = inevitable” ⸻ ❌ E. “Ethnicity is a strong predictor” Incorrect and problematic. Risk factors are mainly: • Socioeconomic adversity • Substance misuse • Domestic violence • Parental mental illness • Social isolation • Previous abuse history Ethnicity alone is NOT a strong predictor.

Answer 298

✅ Correct Answer ⭐ E. Willingness to continue doing schoolwork at home ⸻ 📘 Why this answer is correct School refusal is an anxiety-based disorder of attendance, not a rejection of education. Key features: • Marked distress about attending school • Somatic symptoms (e.g., abdominal pain, headache) • Parents usually aware • Child stays at home • Absence motivated by anxiety, not defiance • Educational engagement often preserved 👉 The child avoids the school setting, not learning. Continuing schoolwork at home shows: ✔ Motivation to learn ✔ No oppositional intent ✔ Anxiety specific to school environment ✔ Consistent with separation anxiety / social anxiety

Answer 299

✅ Correct answer: Group-based parental training ⸻ 💡 Why this is correct (NICE-based) This child fits oppositional/conduct-type behaviour in a child under 11, where behaviour is: • Environmentally maintained • Linked to parenting patterns, boundaries, consistency • Not due to primary mental illness • Most problematic at home • Associated with emotional immaturity and poor reflection 👉 NICE guidance: First-line for ages 3–11 = parent training programmes These target: • Coercive parent–child cycles • Inconsistent discipline • Reinforcement patterns • Behaviour management skills • Boundaries and routines Because behaviour is shaped mainly by caregiving environment at this age. ❌ Why the other options are wrong A. Child-focused programme Used when: • Older child • Adequate emotional maturity • Capacity for reflection • Parent training not feasible 🚫 This child lacks insight, emotional maturity, and reflective capacity — explicitly stated in stem. ⸻ B. Multimodal intervention with family focus Indicated for: • Adolescents (≈11–17 years) • Severe conduct disorder • Persistent offending • Multi-domain impairment • Failure of lower-intensity interventions 🚫 Child is 10 → below typical threshold 🚫 No serious criminal behaviour described ⸻ C. Probation skills training Used within youth justice context: • Offending behaviour • Legal involvement • Risk of reoffending 🚫 No criminal justice involvement here. ⸻ D. Risperidone Medication: • NOT routine treatment • Consider only if severe aggression persists • After psychosocial interventions fail 🚫 NICE: psychosocial first-line 🚫 No trial of behavioural intervention yet ⸻ ⭐ Ultra-High-Yield Exam Rule (Paper B GOLD) Conduct disorder / ODD management = AGE-BASED ladder 3–11 years → Parent training (FIRST LINE) 9–14 overlap → Child-focused programmes 11–17 years → Multimodal interventions Medication = last resort

Answer 300

✅ Correct answer: Social phobia ⸻ 💡 Why Social Phobia is LEAST associated Conduct disorder = externalising disorder Social anxiety = internalising disorder They move in opposite behavioural directions. 👉 Children with social anxiety usually: • Avoid confrontation • Fear judgment • Avoid peers • Are inhibited rather than antisocial So the overlap with aggressive antisocial behaviour is low. ⸻ ❌ Why the others ARE associated (high-yield) 🧨 ADHD — VERY strongly associated Classic comorbidity. • Shared impulsivity • Poor executive control • Emotional dysregulation • Early onset disruptive behaviour 👉 Many cases of conduct disorder evolve from untreated ADHD. Exam pearl: ADHD + conduct disorder = higher risk of criminality and substance misuse later. ⸻ 😔 Depression — Common association Surprises many candidates. Conduct disorder → high rates of depression due to: • Family conflict • Academic failure • Peer rejection • Legal problems • Low self-esteem beneath externalising behaviour Also linked to: • Irritability (common in child depression) • Suicidality risk ⸻ 🧠 Learning disability — Strong association Especially mild intellectual disability. Reasons: • Poor problem-solving skills • Frustration tolerance issues • Social misunderstanding • Academic failure • Increased vulnerability to coercive environments ⸻ 🍺 Substance misuse — VERY common Part of the externalising cluster. • Risk-taking behaviour • Deviant peer groups • Early delinquency • Sensation seeking In adolescents, this is almost expected.

Answer 301

✅ Correct answer: Age 5 ⸻ 🧠 Why Age 5 is correct (HIGH-YIELD) Diagnosis requires that bladder control should normally have been achieved. Most children develop nighttime continence between 3–5 years, so bedwetting before this is considered developmentally normal. 👉 Therefore: < 5 years → normal variation ≥ 5 years → possible enuresis diagnosis ⸻ 📚 Diagnostic criteria (exam gold) From DSM-5 / ICD-11 / NICE concepts: Enuresis = repeated voiding into bed/clothes: • At least twice per week for ≥ 3 months OR • Causes significant distress/impairment AND • Chronological or developmental age ≥ 5 years ⭐ Extra Paper B High-Yield Points on Enuresis Types Primary enuresis → Child has never been dry at night Secondary enuresis → Previously dry ≥ 6 months, then relapses ⚠️ Always think: • Stress • Trauma • UTI • Diabetes • Sleep disorders • Constipation ⸻ First-line management (NICE GOLD) 1️⃣ Education + reassurance 2️⃣ Fluid timing advice 3️⃣ Enuresis alarm ⭐ (most effective long-term) Medication only if needed: 👉 Desmopressin — short-term control (e.g., sleepovers)

Answer 302

✅ Correct Answer A. Amnesia for the night terror episode is common ⸻ 🧠 Why this is correct (Exam-focused) Night terrors (sleep terrors / pavor nocturnus) are a non-REM parasomnia characterized by: • Sudden arousal from deep sleep with screaming, panic, autonomic activation • Occur during slow-wave sleep (Stage N3) • Child appears terrified but is not fully awake • No recall the next morning is typical 👉 Memory encoding is poor during deep non-REM sleep → hence amnesia is common ⭐ ULTRA HIGH-YIELD EXAM SUMMARY — Night Terrors Core buzzwords MRCPsych loves: • Non-REM parasomnia • Stage 3 slow-wave sleep • First third of night • Sudden screaming / autonomic arousal • Difficult to awaken • Confusion on arousal • Complete amnesia afterward • Common in children • Usually self-limiting

Answer 303

The correct answer is: AAA AAA (Adult Asperger Assessment) A three part diagnostic instrument consisting of two screening instruments, the Autism-Spectrum Quotient (AQ) and the Empathy Quotient (EQ), and a clinician-conducted diagnostic questionnaire, the Adult Asperger Assessment (AAA)

Answer 304

ADOS-G (Autism Diagnostic Observation Schedule-Generic) Semistructured assessment. Involves the use of observational schedules. Patients are engaged in specific activities and their behaviour observed. Recommended by NICE for those with a learning disability

Answer 305

ADI-R (Autism Diagnostic Interview-Revised)

Answer 306

✅ Correct answer: 40% The correct answer is 40%. According to the National Institute for Health and Care Excellence (NICE) in the UK, approximately 40% of adults with learning disabilities also have a psychiatric illness. This high prevalence can be attributed to various factors such as biological vulnerabilities, increased exposure to social disadvantage and adversity, and difficulties in recognising and diagnosing mental health problems in this population due to communication difficulties or atypical presentation of symptoms.

Answer 307

(RAADS-R) Ritvo Autism Asperger Diagnostic Scale Revised

Answer 308

CHAT - The Checklist for Autism in Toddlers

Answer 309

✅ Correct Answer C. Aripiprazole ⸻ 🧠 Why this is correct (Exam logic) For adolescent mania, NICE-aligned practice: 👉 First-line = Second-generation antipsychotics (SGAs) Aripiprazole is specifically licensed and recommended for: • Acute mania in adolescents ≥13 years • Moderate–severe manic episodes • Bipolar I disorder in young people 💡 It has a relatively favourable metabolic profile compared with some other SGAs.

Answer 310

✅ Correct Answer The assumption that the presence of a learning disability explains the entire patient’s behaviour ⸻ 🧠 What Diagnostic Overshadowing REALLY Means It is when: A clinician attributes new symptoms, behavioural changes, or psychiatric features to the intellectual disability itself — instead of considering a separate mental or physical disorder. In simple terms: 👉 “They behave like this because they have LD.” Instead of asking: 👉 “Could this be depression? Psychosis? Pain? Thyroid disease?” ⸻ 🎯 Why This Matters (Paper B angle) Adults with learning disability have: • ~40% psychiatric comorbidity (you just revised this 😉) • High rates of epilepsy • High rates of depression & anxiety • Increased physical health problems If you assume everything is “just the LD,” you miss treatable conditions.

Answer 311

✅ Correct Answer E. 3 : 1 ⸻ • ASD is significantly more common in males • Modern epidemiological data suggest ~3 boys for every 1 girl • Earlier estimates (4:1) likely inflated due to underdiagnosis in females • Recognition of the female autism phenotype has reduced the apparent gap ⸻ ⭐ Why females were historically missed Girls often present differently: • Better social imitation / masking (“camouflaging”) • More socially acceptable restricted interests • Internalising symptoms (anxiety, depression) • Fewer overt behavioural problems • Later diagnosis (often adolescence/adulthood)

Answer 312

Tourette's syndrome DSM-5/ICD-11: multiple motor + ≥1 vocal tic, present > 1 year, onset <18 years.

Answer 313

→ CGG trinucleotide repeat expansion (>200 repeats) in the FMR gene on the X chromosome (Xq27.3). • <45 repeats = normal • 55-200 = premutation (carrier) • >200 = full mutation → methylation and silencing of FMR1 → 4 FMRP protein

Answer 314

ADHD • ADHD and OCD are the two most common comorbidities. • ADHD: ~60%, OCD: ~30-50%.

Answer 315

Clonidine NICE: a2-agonists (clonidine/ guanfacine) are preferred if ADHD present. • Antipsychotics (risperidone, aripiprazole) used if severe/refractory.

Answer 316

*Answer: Kallmann Syndrome Features: absent/delayed puberty, infertility, anosmia Genetics: often X-linked (KAL1), but multiple genes involved ——— 🧠 Kallmann Syndrome Features • Cause: Failure of GnRH neurons to migrate from olfactory placode → hypothalamus. • Key triad: - Hypogonadotropic hypogonadism (low FSH/LH, infertility, delayed puberty). - Anosmia or hyposmia (olfactory bulb agenesis). - May also have midline defects (cleft lip/palate, renal agenesis, hearing loss).

Answer 317

Tuberous sclerosis • TSC → cortical tubers, epilepsy, intellectual disability, skin findings (ash-leaf spots, adenoma sebaceum). • Strong association with ASD.

Answer 318

Angelman syndrome • "Happy puppet" syndrome: ataxia + seizures + inappropriate laughter. • Maternal deletion (15q11-q13, UBE3A gene).

Answer 319

✅ Correct Answer: C) It is caused by a mutation in the MECP2 gene and almost exclusively affects females. ⸻ 💡 Explanation: Rett Syndrome is a neurodevelopmental disorder that almost exclusively affects females, as mutations in the MECP2 gene on the X chromosome (Xq28) are typically lethal in males. Affected girls appear to develop normally for the first 6–18 months before showing regression in acquired motor and language skills, stereotyped hand movements (e.g. hand-wringing), gait abnormalities, and loss of purposeful hand use. ⸻ 🔑 High-Yield Facts: 1. 🧬 Gene Mutation: Caused by mutations in the MECP2 gene (X-linked dominant), typically de novo. 2. 👧 Affects Girls: Almost exclusively affects females; males with MECP2 mutation usually do not survive infancy unless they have Klinefelter syndrome (XXY). 3. 👋 Regression + Hand Stereotypies: Classic features include developmental regression, loss of speech, ataxia, and stereotyped hand-wringing movements (pathognomonic).

Answer 320

✅ Correct answer C. Methylphenidate ⸻ 3️⃣ Explanation Why C is correct • NICE: First-line for adults = methylphenidate • Stimulants preferred over atomoxetine Why others are wrong • CBT is adjunct, not first-line standalone • Atomoxetine second-line • Bupropion not licensed for ADHD in UK • Clonidine not first-line

Answer 321

Fragile X syndrome • The most common single-gene condition associated with ASD • X-linked dominant, due to CGG trinucleotide repeat expansion in the FMR gene • Features: Large ears, long face, macrocephaly Macroorchidism after puberty Repetitive hand flapping Hyperextensible joints, hypotonia, flat feet (pes platus) High arched palate Pectus excavatum Mitral valve prolapse Seizures in 10% Developmental delay Intellectual disability ADHD and ASD features common Social anxiety and gaze avoidance

Answer 322

MECP2 • Rett syndrome: only in girls (lethal in boys) • Regression + hand stereotypies + ASD features + seizures

Answer 323

Stimming refers to self-stimulatory behavior, which includes repetitive movements or sounds often exhibited by individuals with autism.

Answer 324

Tourette's syndrome Criteria: Multiple motor tics + 1 vocal tic > 1 year a) Best treatment? → CBIT + antipsychotics (e.g., aripiprazole) b) Comorbid with? → OCD, ADHD

Answer 325

Habit Reversal Training (HRT) • HRT and CBIT (Comprehensive Behavioral Intervention for Tics) are first-line behavioral approaches.

Answer 326

Coprolalia is common • Coprolalia is present in only ~ 10% of patients, but often over-represented in media.

Answer 327

→ X-linked dominant • Affected males are more severely impacted due to having only one X chromosome. • Carrier females may have mild cognitive or emotional symptoms FMR1 CGG repeat expansion X-linked → males more affected Most common inherited ID Anticipation phenomenon Females milder due to X-inactivation Large ears, long face, macrocephaly Macroorchidism after puberty Repetitive hand flapping Hyperextensible joints, hypotonia, flat feet (pes platus) High arched palate Pectus excavatum Mitral valve prolapse Seizures in 10% Developmental delay Intellectual disability ADHD and ASD features common Social anxiety and gaze avoidance

Answer 328

✅ Correct Answer B. Individual directing their own support planning ⸻ 🧠 Core Concept — Person-Centred Care Person-centred planning places the individual at the centre of decisions about their care and support. It emphasises: • Autonomy • Strengths and abilities • Personal goals • Community participation The individual directs the planning process, with support from professionals and family. ⸻ 🔎 Why the other options are wrong A. Professional-led goal setting This represents a paternalistic model. Person-centred care requires shared or individual direction, not professional control. ⸻ C. Family making all decisions Family input is important but the individual remains central. ⸻ D. Standard care pathways Person-centred planning is individualised, not standardised. ⸻ E. Medical model of care The medical model focuses on deficits and pathology, whereas person-centred care focuses on abilities and preferences. ⸻ ⭐ High-Yield Concept for Paper B Person-centred planning includes: • Individual budgets / personal budgets • Supported decision-making • Community inclusion • Strength-based approaches Often tested in learning disability services.

Answer 329

✅ Correct Answer B. Dyslexia ⸻ 🧠 Core Concept Dyslexia is a specific learning disorder affecting reading and language processing. Key features: • Difficulty decoding words • Poor reading fluency • Problems with spelling • Problems with phonological processing Importantly: 👉 Occurs despite normal intelligence and adequate schooling.

Answer 330

✅ Correct Answer B. 4–10% ⸻ 🧠 Core Concept Dyslexia is the most common specific learning disorder. Estimated prevalence: 👉 4–10% of the population Key epidemiology: • Boys affected ~2× more often than girls • Often identified in early school years • Frequently familial

Answer 331

✅ Correct Answer B. Dyscalculia ⸻ 🧠 Core Concept Dyscalculia = specific learning disorder affecting mathematics. Key features: • Difficulty understanding numbers • Problems with arithmetic • Difficulty recalling number facts • Poor quantitative reasoning Important clue: 👉 Reading ability is normal This excludes dyslexia. ⭐ Neurobiology (occasionally tested) Dyscalculia is linked to dysfunction in the: 👉 Right parietal lobe (particularly the intraparietal sulcus, involved in number processing)

Answer 332

✅ Correct Answer D. Dyspraxia ⸻ 🧠 Core Concept Dyspraxia = Developmental Coordination Disorder (DCD). It involves: • Difficulty planning movements • Poor motor coordination • Clumsiness • Difficulty learning motor tasks Examples: • Tying shoelaces • Using cutlery • Riding a bicycle • Sports coordination Importantly: 👉 Muscle strength and sensation are normal The problem is motor planning, not motor ability. ⭐ Exam Pearl Dyspraxia often coexists with: • ADHD • Autism spectrum disorder • Learning disorders

Answer 333

✅ Correct Answer C. Dysgraphia ⸻ 🧠 Core Concept Dysgraphia is a specific learning disorder affecting writing. Key features: • Poor handwriting • Difficulty letter formation • Problems with written expression • Slow writing speed

Answer 334

✅ Correct Answer C. Auditory Processing Disorder (APD) ⸻ 🧠 Core Concept Auditory Processing Disorder is a condition where the brain has difficulty interpreting auditory information despite: ✔ Normal hearing ✔ Normal intelligence ✔ No structural ear pathology Children can hear sounds but cannot properly process speech signals, particularly when background noise is present. ⭐ Exam-Significance Pearl The examiner purposely included these clues: • Normal hearing • Mishears similar-sounding words • Worse in noisy environments This combination almost always points to: 👉 Auditory Processing Disorder The “noisy environment” clue is the biggest giveaway.

Answer 335

✅ Correct Answer D. Signs, symbols, and speech ⸻ 🧠 Core Concept Makaton is an augmentative communication system used to support individuals with: • Learning disabilities • Autism • Speech and language disorders It combines: ✔ Speech ✔ Manual signs ✔ Visual symbols The goal is to support communication by using multiple modalities simultaneously.

Answer 336

✅ Correct Answer C. Functional communication through picture exchange ⸻ 🧠 Core Concept PECS (Picture Exchange Communication System) is an augmentative communication system designed to teach functional communication using pictures. The child learns to exchange a picture to request something (e.g., giving a picture of juice to ask for juice). It is widely used in: • Autism spectrum disorder • Learning disability • Speech and language delay ⸻ Structure of PECS PECS progresses through 6 phases: 1️⃣ Picture exchange (requesting) 2️⃣ Increasing spontaneity 3️⃣ Picture discrimination 4️⃣ Sentence structure 5️⃣ Responding to questions 6️⃣ Commenting

Answer 337

✅ Correct Answer C. Deaf children of hearing parents ⸻ 🧠 Core Concept Empathy development relies heavily on early language and social communication. When a child is: • Deaf • Raised by hearing parents who initially cannot sign communication difficulties may occur early in development. This can delay: • Theory of mind • Emotional understanding • Empathy development ⸻ 🔎 Why the other options are wrong A. Blind children of blind parents Blind children may develop empathy through verbal communication and social interaction. ⸻ B. Deaf children of deaf parents These children typically grow up with early exposure to sign language, allowing normal social communication development. ⸻ D. Hearing children of deaf parents Communication may differ but empathy development is not typically delayed. ⸻ E. Children with intellectual disability Empathy may vary but language access is the key issue in this question. ⸻ ⭐ Exam-Significance Pearl The critical clue here is the mismatch: 👉 Deaf child + hearing parents Because: • Early communication barriers • Delayed language exposure These factors affect social cognition development.

Answer 338

✅ Correct Answer B. Assessing patient’s strengths ⸻ 🧠 Core Concept The recovery model focuses on: • Strengths • Personal goals • Empowerment • Community participation It moves away from deficit-based care. The aim is improving quality of life, not curing the condition.

Answer 339

✅ Correct Answer B. Providing specialized training to teachers on inclusive methods ⸻ 🧠 Core Concept The Special Educational Needs and Disability Act (SENDA) 2001 requires schools to make reasonable adjustments for pupils with disabilities. A key strategy is ensuring teachers are trained in: • Inclusive education • Differentiated teaching methods • Adapted learning materials • Classroom accessibility

Answer 340

✅ Correct Answer B. Psychoanalytic psychotherapy for learning disabilities ⸻ 🧠 Core Concept Valerie Sinason developed a model of psychoanalytic psychotherapy tailored for individuals with learning disabilities. Her work emphasised: • Emotional trauma in people with learning disabilities • The importance of psychological meaning of symptoms • Adaptation of psychotherapy to cognitive ability

Answer 341

✅ Correct Answer C. Intellectual disability ⸻ 🧠 Core Concept Rates of violent and sexual offending are somewhat higher among individuals with intellectual disability, particularly: • Mild intellectual disability • Young males However, it is important to recognise that most individuals with intellectual disability are not offenders. ⸻ Factors contributing to increased risk Common risk factors include: • Poor impulse control • Social misunderstanding • Limited sexual education • Suggestibility • Difficulty understanding social rules

Answer 342

✅ Correct Answer C. Shoplifting ⸻ 🧠 Core Concept People with drug dependence frequently commit acquisitive crimes to obtain money for substances. The most common include: • Shoplifting • Theft • Burglary These are referred to as drug-related acquisitive crimes.

Answer 343

✅ Correct Answer B. Extraordinary abilities in specific domains despite significant disability elsewhere ⸻ 🎯 High-Yield for MRCPsych? 🟡 Moderate yield Savant syndrome is a classic neurodevelopmental concept, occasionally tested in autism questions. ⸻ 🧠 Explanation (Exam Logic) Savant syndrome refers to individuals with: • Significant developmental disability • But exceptional ability in one specific area Common abilities include: • Music • Art • Calendar calculation • Memory • Mathematical calculation Most cases occur in autism spectrum disorder. ⸻ ⭐ High-Yield Facts 1️⃣ Around 10% of people with autism show savant skills. 2️⃣ Savant abilities commonly involve memory, music, or calendar calculation. 3️⃣ The condition is much more common in males. 4️⃣ Some savant skills involve extraordinary rote memory. 5️⃣ Famous examples include individuals who can calculate calendar dates instantly.

Answer 344

✅ Correct Answer C. 1 in 4500 ⸻ 🎯 High-Yield for MRCPsych? 🟢 HIGH YIELD 22q11 deletion syndrome is very important for psychiatry exams because it has one of the strongest genetic links to schizophrenia. ⸻ 🧠 Explanation (Exam Logic) Velocardiofacial syndrome (also called DiGeorge syndrome) results from a microdeletion on chromosome 22q11.2. It affects: • Heart development • Facial structure • Immune function • Neurodevelopment Incidence ≈ 1 in 4500 births. ⸻ ⭐ High-Yield Facts 1️⃣ 22q11 deletion syndrome has the strongest known genetic association with schizophrenia. 2️⃣ Up to 25–30% develop schizophrenia or psychotic disorders. 3️⃣ It often presents with congenital heart defects. 4️⃣ Other features include palatal abnormalities and immune deficiency. 5️⃣ It is one of the most common microdeletion syndromes.

Answer 345

✅ Correct Answer B. Ataxia and cardiomyopathy ⸻ 🎯 High-Yield for MRCPsych? 🟡 Moderate yield Neurological genetic syndromes occasionally appear in learning disability or neuropsychiatry questions. ⸻ 🧠 Explanation (Exam Logic) Friedreich’s ataxia is an autosomal recessive neurodegenerative disorder. It causes progressive: • Ataxia • Cardiomyopathy • Peripheral neuropathy Symptoms usually begin in childhood or adolescence. ⸻ ⭐ High-Yield Facts 1️⃣ Caused by GAA trinucleotide repeat expansion in the frataxin gene (FXN). 2️⃣ It is the most common inherited ataxia. 3️⃣ Patients frequently develop hypertrophic cardiomyopathy. 4️⃣ Diabetes mellitus occurs in some patients. 5️⃣ Reflexes are typically absent (areflexia).

Answer 346

✅ Correct Answer B. Broad thumbs and beaked nose ⸻ 🎯 High-Yield for MRCPsych? 🟡 Moderate yield These syndrome-feature associations sometimes appear in learning disability sections. ⸻ 🧠 Explanation (Exam Logic) Rubinstein-Taybi syndrome is a genetic disorder associated with: • Broad thumbs and great toes • Distinctive facial features (beaked nose) • Intellectual disability • Short stature ⸻ ⭐ High-Yield Facts 1️⃣ Caused by mutations affecting CREBBP gene. 2️⃣ Patients typically have moderate intellectual disability. 3️⃣ Characteristic broad thumbs and toes are diagnostic clues. 4️⃣ Facial features include beaked nose and downward slanting eyes. 5️⃣ Increased risk of tumours such as meningiomas

Answer 347

✅ Correct Answer D. 90% ⸻ 🎯 High-Yield for MRCPsych? 🟢 VERY HIGH YIELD Genetic epidemiology of autism and schizophrenia appears frequently in MRCPsych exams. ⸻ 🧠 Explanation (Exam Logic) Twin studies show that autism spectrum disorder is highly heritable. Concordance rates: • Monozygotic twins: very high • Dizygotic twins: much lower Estimated heritability ≈ 80–90%. ⸻ ⭐ High-Yield Facts 1️⃣ Autism has one of the highest heritability estimates among psychiatric disorders. 2️⃣ Male prevalence ≈ 4:1 compared with females. 3️⃣ Associated with copy number variations and rare mutations. 4️⃣ Many genes involved in synaptic development. 5️⃣ Environmental factors still play a modulating role.

Answer 348

✅ Correct Answer C. 20–30% ⸻ 🎯 High-Yield for MRCPsych? 🟢 VERY HIGH YIELD The association between intellectual disability and epilepsy is a classic MRCPsych learning disability fact. ⸻ 🧠 Explanation (Exam Logic) Epilepsy is much more common in people with intellectual disability than in the general population. Prevalence: • General population: ~1% • Intellectual disability: 20–30% The risk increases with severity of intellectual disability. ⸻ ⭐ High-Yield Facts 1️⃣ Epilepsy prevalence rises to 40–50% in severe intellectual disability. 2️⃣ Common associated conditions include: • Tuberous sclerosis • Angelman syndrome • Rett syndrome 3️⃣ Epilepsy may contribute to behavioural problems. 4️⃣ Certain seizure syndromes are strongly linked with neurodevelopmental disorders. 5️⃣ Care often requires multidisciplinary management.

Answer 349

✅ Correct Answer B. Encopresis Encopresis is defined as: Repeated passage of faeces in inappropriate places (e.g., clothing or floor) after the age at which bowel control is expected. Key diagnostic points: • Age ≥ 4 years • Occurs at least once per month for ≥ 3 months (DSM criteria) • Can be voluntary or involuntary It is often associated with: • Chronic constipation • Overflow incontinence • Psychosocial stressors • Neurodevelopmental disorders

Answer 350

2️⃣ ✅ Correct answer Chronic motor tic disorder ⸻ 3️⃣ Clear, exam-focused explanation Why chronic motor tic disorder is correct: • Motor tics present • Duration ≥ 1 year • No vocal tics → Fits chronic motor tic disorder Why others are wrong: • Tourette’s syndrome → Requires BOTH motor + vocal tics ❌ • Transient motor tics → Duration < 1 year ❌ • Stereotyped movement disorder → Rhythmic, repetitive (e.g. hand-flapping) → Not sudden, brief tics • Hyperkinetic disorder (ADHD) → Attention + hyperactivity → Not tics ⸻ 4️⃣ 📘 NICE / ICD-11 / DSM-5 / Maudsley / BNF rules • ICD-11 tic disorders: → Transient tic disorder • < 1 year → Chronic motor OR vocal tic disorder • ≥ 1 year • Only one type → Tourette’s syndrome • ≥ 1 year • BOTH motor + vocal tics Exam is testing → Diagnosis (duration + type classification) ⸻ 5️⃣ ⭐ High-yield facts to memorise • Tic = → Sudden → Rapid → Non-rhythmic • Tourette’s: → Motor + vocal tics • Chronic tic disorder: → ≥1 year • Transient tics: → <1 year • Peak onset: → 5–7 years ⸻ 6️⃣ ⚠️ Common MRCPsych exam traps • Diagnosing Tourette’s without vocal tics ❌ • Forgetting duration rule ❌ • Confusing tics with stereotypies ❌ • Ignoring timeline (1 year = key discriminator) ⸻ 7️⃣ 🧠 One-line exam answer Chronic motor tic disorder is diagnosed when motor tics persist for over 1 year without vocal tics.

Answer 351

2️⃣ ✅ Correct answer 70% children improve with methylphenidate ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Stimulants (e.g. methylphenidate) are highly effective • Around 70% respond to one stimulant • Up to 90–95% respond to any stimulant overall ⸻ Why others are wrong: • Comorbidity less common ❌ → ADHD has HIGH comorbidity (ODD, ASD, anxiety) • Atomoxetine is 2nd line ❌ → It is an alternative first-line option • Behaviour therapy after drugs ❌ → Behavioural interventions = first-line in mild/moderate cases • Atomoxetine is a controlled drug ❌ → It is NOT controlled (unlike stimulants) ⸻ 4️⃣ 📘 NICE / ICD-11 / Maudsley / BNF rules • NICE NG87 (ADHD): → Mild/moderate → behavioural therapy first → Severe → medication • First-line meds: → Methylphenidate → Lisdexamfetamine → Atomoxetine (alternative) Exam is testing → Management principles + pharmacology ⸻ 5️⃣ ⭐ High-yield facts to memorise • Methylphenidate response rate ≈ 70% • ADHD comorbidity = VERY common (~60–70%) • Atomoxetine = non-stimulant • Stimulants = controlled drugs • Behaviour therapy first in mild/moderate

Answer 352

2️⃣ ✅ Correct answer Prader-Willi syndrome ⸻ 3️⃣ Clear, exam-focused explanation Why Prader-Willi is correct: • Caused by loss of paternal gene expression on chromosome 15 • Classic example of genomic imprinting disorder ⸻ Key concept: • Same region → 2 disorders depending on parent: → Prader-Willi = loss of paternal genes → Angelman = loss of maternal genes ⸻ Why others are wrong: • Down’s syndrome → Trisomy 21 • Klinefelter’s → XXY • Patau’s → Trisomy 13 • Lesch-Nyhan → X-linked HGPRT deficiency → None are imprinting disorders ⸻ 4️⃣ 📘 NICE / ICD-11 / Maudsley / BNF rules • Imprinting = → Gene expression depends on parent of origin • Chromosome 15 region: → Key imprinting site Exam is testing → Genetics (high-yield association) ⸻ 5️⃣ ⭐ High-yield facts to memorise • Prader-Willi: → Hypotonia (infancy) → Hyperphagia → obesity → Learning disability • Angelman: → Ataxia → Seizures → “Happy puppet” • Mechanisms: → Deletion → Uniparental disomy

Answer 353

✅ Correct answer: Child has a disability (cerebral palsy) ⸻ 💡 Ultra-high-yield exam answer (1 line) 👉 Child disability = strongest single risk factor for abuse ⸻ 🧠 Why this is the answer (EXAM LOGIC) Children with disabilities (especially physical/intellectual): ✔️ More dependent on caregivers ✔️ Communication difficulties → less able to disclose ✔️ Increased caregiving stress ✔️ Social isolation 👉 All of this = significantly ↑ risk of abuse and neglect ⸻ 📊 Exam gold statistic (if you remember one thing) 👉 Disabled children are: 3–4 times more likely to be abused 💥 This is why it beats parental factors in exams

Answer 354

✅ Correct answer: Video feedback sessions ⸻ 💡 Ultra-high-yield exam answer (1 line) 👉 RAD → first-line = parent–child interaction intervention (video feedback) ⸻ 🧠 Why this is correct (EXAM LOGIC) Reactive Attachment Disorder = problem of: • ❌ Attachment • ❌ Caregiver-child relationship • ❌ Parental sensitivity 👉 So treatment MUST target: ➡️ Parent-child interaction, NOT the child alone ⸻ 🎯 What is Video Feedback Therapy? (VIG / VIPP) • Record parent interacting with child 📹 • Review together • Highlight: • ✅ Sensitivity • ✅ Responsiveness • ✅ Emotional attunement 👉 Basically: “Look — here your child needed comfort, and here’s how you responded” 💥 This directly repairs attachment patterns ⸻ 🚫 Why the other options are WRONG ❌ Group therapeutic play • Focuses on child alone • RAD = relational disorder → not enough ⸻ ❌ Parent group training • Too generic • NICE wants targeted dyadic work (parent + child) ⸻ ❌ Fluoxetine / Risperidone • 🚫 NO meds for RAD (unless comorbidity) • Classic exam trap

Answer 355

✅ Correct answer: 95% ⸻ 💡 Ultra-high-yield exam answer (1 line) 👉 By age 4 → ~95% of children have bowel control

Answer 356

✅ Correct answer: Early developmental onset ⸻ 💡 Ultra-high-yield exam answer (1 line) 👉 ASD = neurodevelopmental → must start in early childhood (even if noticed later) ⸻ 🧠 The ONE rule to remember (exam anchor) 👉 ASD = EARLY-ONSET + 2 DOMAINS REQUIRED If you remember just this → you get 80% of ASD questions right. ⸻ 🧩 DSM-5 Criteria (simplified exam version) ✔️ MUST have BOTH: 1️⃣ Social communication deficits (ALL 3) • Social reciprocity • Non-verbal communication • Relationships 2️⃣ Restricted/repetitive behaviours (≥2) • Repetitive movements/speech • Routines • Restricted interests • Sensory issues ⸻ ✔️ PLUS: • Symptoms present in early developmental period 🔥 • Cause impairment • Not better explained by ID ⸻ ⚠️ Why ALL other options are wrong (EXAM TRAPS) ⸻ ❌ “Formal language impairment required” 👉 NO • Grammar & vocabulary can be normal or advanced • Problem = social use (pragmatics) ⸻ ❌ “RRBs not required” 👉 VERY COMMON TRAP ❗ RRBs are MANDATORY 👉 Without them → NO ASD diagnosis ⸻ ❌ “Asperger’s used in ICD-11” 👉 OUTDATED • ❌ Removed in DSM-5 • ❌ Removed in ICD-11 👉 Now: Everything = ASD ⸻ ❌ “Language delay required” 👉 NO • Some ASD individuals: • Speak early • Have advanced vocabulary 🔥 High-yield facts (memorise these) 1. Early developmental onset = REQUIRED 2. RRBs = REQUIRED 3. Language delay = NOT required 4. Asperger’s = obsolete 5. ASD = social communication disorder, not language disorder

Answer 357

✅ Correct Answer: B. Individual CBT ⸻ 🎯 High-yield MRCPsych? 🟢 VERY HIGH-YIELD 👉 NICE stepped-care model in CAMHS depression = CLASSIC exam favourite ⸻ 🧠 Exam-focused explanation 🔑 What is this question testing? 👉 NICE stepped-care approach in child depression ⸻ 🪜 NICE logic (THIS IS THE KEY) Mild depression in children: 1️⃣ Start → ✔ Low-intensity / group psychological therapy (e.g. group CBT) 2️⃣ If NO response → 👉 Switch modality (NOT escalate to meds yet) ✔ → Individual CBT 3️⃣ Only if moderate–severe OR persistent → 👉 Consider fluoxetine ± therapy ⸻ 💡 Why Individual CBT? • Child already failed group CBT • NICE says: 👉 Offer a different type of psychological therapy ✔ Individual CBT = more tailored ✔ Better engagement ✔ Still first-line in mild depression ⸻ ❌ Why the other options are wrong (EXAM TRAPS) A. Citalopram ❌ • SSRIs NOT first-line in mild depression • Also: 👉 Citalopram → QT prolongation (extra trap) ⸻ C. Psychotherapy ❌ • Too vague 👉 Exam wants specific modality (CBT, IPT, etc.) ⸻ D. Group interpersonal therapy ❌ • Still group-based 👉 Already failed group therapy → don’t repeat format ⸻ E. Intensive therapy + fluoxetine ❌ • Reserved for: 👉 Moderate–severe depression 👉 NOT mild ⸻ ⭐ 3–5 High-Yield Facts 1️⃣ Fluoxetine = ONLY first-line SSRI in children (NICE) 👉 And ONLY when: • Moderate–severe • OR failed psychological therapy ⸻ 2️⃣ Mild depression = psychological therapy ONLY initially 👉 NO meds first-line ⸻ 3️⃣ If one therapy fails → CHANGE TYPE, not intensity immediately 👉 Group → Individual 👉 CBT → IPT (sometimes) ⸻ 4️⃣ “Psychotherapy” alone = WRONG in exams 👉 Always choose specific named therapy

Answer 358

**Previous Exam Question** ✅ Correct Answer: D. Klinefelter’s syndrome ⸻ 👉 Lyonization = X-chromosome inactivation • Occurs when there are ≥ 2 X chromosomes • One X becomes inactive (Barr body) 👉 In Klinefelter’s (47, XXY): • Male has extra X chromosome • Therefore: ✔ Lyonization ALWAYS occurs ⸻ ❌ Why the other options are wrong (exam traps) • A. Othello syndrome → ❌ Delusional jealousy (nothing genetic) • B. Alport’s syndrome → ❌ X-linked disorder, but only one X active (no lyonization in males XY) • C. Munchausen’s → ❌ Factitious disorder • E. Cotard’s → ❌ Nihilistic delusion

Answer 359

✅ Correct Answer: D. Invading social boundaries ⸻ 🧠 Exam-focused explanation 👉 The key distinction: • DSED → DISINHIBITED • Overly familiar with strangers • No social boundaries • Will approach / go with unfamiliar adults • RAD → INHIBITED • Withdrawn • Avoids comfort • Minimal emotional response 👉 Therefore: ✔ “Invading social boundaries” = DSED ⸻ ❌ Why the other options are wrong (exam traps) • A. History of inadequate caregivers → ❌ Seen in BOTH (not discriminating) • B. Hypervigilance → ❌ More RAD (fearful/inhibited) • C. Avoids eye contact → ❌ RAD / ASD-like • E. Difficulties being affectionate → ❌ RAD (emotionally withdrawn) ⸻ 🎯 High-yield for MRCPsych? 🟢 EXTREMELY HIGH YIELD 👉 RAD vs DSED = classic differentiation question ⸻ ⭐ 3–5 High-Yield Facts 1️⃣ RAD = emotionally withdrawn / inhibited 👉 “Does NOT seek comfort when distressed” (VERY tested) 2️⃣ DSED = indiscriminate sociability 👉 Talks to strangers, no stranger danger 3️⃣ Both require: history of neglect / insufficient care 👉 This is NOT a differentiating feature 4️⃣ DSED resembles ADHD 👉 Disinhibited, impulsive 5️⃣ RAD resembles ASD 👉 Social withdrawal, poor reciprocity

Answer 360

**Previous Exam Question** ✅ Correct Answer: D. Approximately 10–20% ⸻ 🧠 Exam-focused explanation 👉 Autism has a strong genetic component 👉 Sibling recurrence risk is significantly higher than general population • General population risk ≈ 1–2% • Sibling risk ≈ 10–20% 👉 This reflects: • Polygenic inheritance • Shared environmental factors ⸻ ❌ Why the other options are wrong (exam traps) • A (1–2%) → ❌ That’s general population, NOT sibling risk • B (3–4%) / C (5–7%) → ❌ Underestimates recurrence • E (30–40%) → ❌ Too high (would suggest Mendelian pattern) ⸻ 🎯 High-yield for MRCPsych? 🟢 EXTREMELY HIGH YIELD 👉 Autism = • Genetics • Epidemiology • Counselling ➡️ Very frequently tested ⸻ ⭐ 3–5 High-Yield Facts 1️⃣ ASD heritability ≈ 80–90% 👉 One of the most heritable psychiatric conditions 2️⃣ Male : Female ratio ≈ 3:1 👉 But females are underdiagnosed (masking) 3️⃣ Sibling risk increases further if: • More than one affected child • Severe phenotype 4️⃣ Monozygotic twins concordance >> dizygotic 👉 Classic exam genetics point 5️⃣ No single gene (usually) 👉 Polygenic + environmental interaction

Answer 361

✅ Correct Answer: D. Cognitive behavioural therapy (CBT) ⸻ 🧠 Exam-focused explanation 👉 This is Chronic Fatigue Syndrome (CFS) / ME Key clues: • >6 months fatigue • Post-exertional worsening (VERY important) • Normal labs • Functional decline (school, activities) 👉 NICE-based management: • CBT = first-line • Helps with coping, pacing, cognitive restructuring ⸻ ❌ Why the other options are wrong (exam traps) • A. Steroids / B. IVIG → ❌ No role (trap: thinking autoimmune) • C. Reassurance only → ❌ Inadequate (needs active management) • E. Graded exposure therapy → ❌ WRONG TERM 👉 Exam wants graded exercise therapy (GET) — and even that is now controversial in NICE ⸻ 🎯 High-yield for MRCPsych? 🟢 VERY HIGH YIELD 👉 CFS in adolescents = frequent CAMHS exam topic ⸻ ⭐ 3–5 High-Yield Facts 1️⃣ Core feature = Post-exertional malaise 👉 MOST discriminating symptom (exam pearl) 2️⃣ Diagnosis = clinical + normal investigations 👉 Always exclude organic causes first 3️⃣ CBT is first-line (NICE) 👉 Focus on activity pacing + cognition 4️⃣ Graded Exercise Therapy (GET) ⚠️ Previously recommended → now controversial / de-emphasised in NICE 2021 5️⃣ Common differentials in exams • Depression (BUT here: denies mood symptoms) • Hypothyroidism (ruled out) • Anaemia (ruled out)

Answer 362

✅ Correct Answer: D. Often bullies, threatens, or intimidates others ⸻ 🧠 Exam-focused explanation Conduct disorder = 👉 Repetitive pattern of behaviour violating the rights of others or societal norms Core domains include: • Aggression to people/animals • Destruction of property • Deceitfulness or theft • Serious rule violations 👉 Bullying, threatening, intimidating = aggression domain → TRUE diagnostic criterion ⸻ ❌ Why the other options are wrong (exam traps) All of these are ODD (Oppositional Defiant Disorder) features: • A. Angry/resentful → ❌ ODD • B. Deliberately annoys others → ❌ ODD • C. Argues with authority → ❌ ODD • E. Touchy/easily annoyed → ❌ ODD 👉 The exam is testing ODD vs Conduct Disorder distinction

Answer 363

✅ Correct Answer: B. Fluoxetine ⸻ 🧠 Exam-focused explanation According to NICE guidelines: 👉 Fluoxetine is the ONLY first-line antidepressant for depression in children and adolescents • Used when psychological therapy alone is insufficient • Best evidence for efficacy + safety • Licensed and recommended in under 18s ⸻ ❌ Why the other options are wrong (exam traps) • A. Citalopram → ❌ 👉 QT prolongation risk + limited evidence in children • C. Paroxetine → ❌ 👉 Avoid in under 18s → ↑ risk of suicidality • D. Sertraline → ❌ 👉 Can be used second-line, NOT first-line • E. Venlafaxine → ❌ 👉 Not first-line → ↑ side effects, risk profile

Answer 364

✅ Correct Answer: E. Failure to seek comfort when distressed ⸻ The key distinction: 👉 RAD = inhibited / withdrawn pattern 👉 DSED = disinhibited / socially indiscriminate pattern In RAD, children: • Do NOT seek comfort when distressed • Show emotional withdrawal • Have limited positive affect 👉 This is the core diagnostic discriminator ⸻ ❌ Why the other options are wrong (exam traps) • A. Abnormal relationship with caregivers → ❌ 👉 Seen in both RAD and DSED • B. Overly familiar with strangers → ❌ 👉 Classic DSED • C. Willing to go off with strangers → ❌ 👉 Very classic DSED (highly testable) • D. Attention-seeking → ❌ 👉 More consistent with disinhibition (DSED) ⸻ ⭐ 3–5 High-Yield Facts 1️⃣ RAD = emotionally withdrawn / inhibited 👉 Does NOT seek or respond to comfort 2️⃣ DSED = socially disinhibited 👉 Approaches strangers, no boundaries 3️⃣ Both require: 👉 History of severe neglect / deprivation 4️⃣ RAD may resemble: 👉 Autism (withdrawn, limited affect) 5️⃣ DSED may resemble: 👉 ADHD (impulsive, socially disinhibited)

Answer 365

✅ Correct Answer: E. The most important predictor of the condition is a positive family history ⸻ 🧠 Exam-focused explanation Non-organic (functional) enuresis: 👉 Strong genetic component • If one parent had enuresis → ~40% risk • If both parents → ~70% risk 👉 Therefore, positive family history = strongest predictor ⸻ ❌ Why the other options are wrong (exam traps) • A. Primary enuresis = main problem → ❌ 👉 Primary = never achieved dryness ≥6 months • B. More common in girls → ❌ 👉 Actually more common in boys • C. Diagnosed at age 3 → ❌ 👉 Must be ≥5 years • D. Passage of faeces → ❌ 👉 That is encopresis, not enuresis

Answer 366

**Previous Exam Question** ✅ Correct Answer: A. Atomoxetine Atomoxetine is associated with increased suicidal thoughts, risk of liver injury, and QTc prolongation ⸻ 👉 Atomoxetine (SNRI, non-stimulant ADHD drug) is associated with: • ⚠️ Rare but serious hepatotoxicity • Can present with: Abdominal pain Nausea Malaise Dark urine Jaundice 👉 NICE + Maudsley: ✔ Parents must be warned about liver injury signs ⸻ ❌ Why the other options are wrong (exam traps) • B. Methylphenidate → ❌ May cause mild LFT changes, NOT true hepatotoxicity • C. Clonidine → ❌ Sedation, hypotension (not liver) • D. Modafinil → ❌ SJS risk (⚠️ important), not liver toxicity focus • E. Bupropion → ❌ Seizure risk (KEY association)

Answer 367

**Previous Exam Question** ✅ Correct Answer: B. Melatonin ⸻ 🧠 Exam-focused explanation In children with autism + sleep disturbance, after failure of behavioural interventions: 👉 Melatonin is first-line pharmacological treatment • Regulates circadian rhythm • Helps with sleep onset latency • Particularly useful in neurodevelopmental disorders NICE-style approach: 1️⃣ Sleep hygiene / behavioural strategies first 2️⃣ If ineffective → Melatonin

Answer 368

✅ Correct Answer: B. At least twice weekly for at least 3 months ⸻ 🧠 Exam-focused explanation Enuresis diagnosis requires: • Repeated voiding of urine (bed/clothes) • Occurs ≥ 2 times per week for ≥ 3 months OR causes clinically significant distress/impairment • Age ≥ 5 years 👉 This is a strict frequency + duration criterion, commonly tested. ⭐ 3–5 High-Yield Facts 1️⃣ Age cutoff = 5 years (VERY commonly tested) 2️⃣ Diagnosis can also be made with less frequency IF distress/impairment present 3️⃣ Primary vs Secondary enuresis • Primary = never dry • Secondary = relapse after ≥ 6 months dryness 4️⃣ Most common type = nocturnal enuresis 5️⃣ First-line treatment = enuresis alarm (NOT medication)

Answer 369

✅ Correct answer Conduct disorder ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Key features in the vignette: → Truancy → Destruction of property → Group antisocial behaviour → Blaming others 👉 These = violation of others’ rights + societal norms ➡️ This defines Conduct Disorder ⸻ 🔥 Diagnostic pattern (VERY IMPORTANT): Conduct disorder includes: • Aggression • Property destruction • Deceitfulness/theft • Serious rule violations (e.g. truancy) ⸻ 🧠 Key insight: 👉 Conduct disorder = childhood version of antisocial behaviour ⸻ Why others are wrong: • Antisocial personality disorder ❌ → Cannot diagnose <18 years • Oppositional defiant disorder (ODD) ❌ → Less severe: → arguing → defiance → NO serious harm or criminality • Asperger’s ❌ → Social communication issues, not aggression • ADHD ❌ → Inattention, hyperactivity — not deliberate harm 📘 NICE / ICD-11 rules • Conduct disorder: → Persistent pattern of behaviour violating social norms • Requires: → Duration ≥ 12 months (ICD/DSM context) Exam is testing → Child psychiatry diagnosis ⸻ ⭐ High-yield facts • Conduct disorder → risk of: → Antisocial personality disorder later • Early onset (<10) = worse prognosis • Associated with: → ADHD → Learning difficulties

Answer 370

✅ Correct answer Attributing a mental health issue to an already existing learning disability ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Diagnostic overshadowing = systematic clinical bias 👉 Clinicians assume: “This behaviour is just part of the learning disability” ➡️ Result: • Missed diagnosis of: → Depression → Anxiety → Psychosis → Physical illness ⸻ 🔥 Real-world example: A patient with LD becomes withdrawn → Clinician says: ❌ “That’s just their baseline” Instead of: ✅ “Could this be depression?” ⸻ 🧠 Why this is dangerous: • Leads to: → Underdiagnosis → Undertreatment • LD patients already have: → higher psychiatric morbidity ⸻ 🔥 Key insight (EXAM GOLD): 👉 LD patients are: • MORE likely to have mental illness BUT • LESS likely to be diagnosed correctly ➡️ Because of diagnostic overshadowing ⸻ Why other options are wrong: • Multiple diagnoses ❌ → That’s comorbidity, not overshadowing • Insufficient explanation ❌ → Not the definition • Behavioural phenotype ❌ → Close distractor, but more specific genetic concept ⸻ 4️⃣ 📘 NICE / MRCPsych concept • LD psychiatry requires: → Careful assessment → Avoid assumptions • NICE emphasises: → Equal access to mental health diagnosis Exam is testing → Clinical bias / LD psychiatry principle ⸻ 5️⃣ ⭐ High-yield facts • Diagnostic overshadowing = → Misattribution of symptoms to LD • LD patients: → ↑ mental illness prevalence • Common missed diagnoses: → Depression → Anxiety → Pain

Answer 371

✅ Correct answer Prader–Willi syndrome ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Prader–Willi = genomic imprinting disorder (chromosome 15) • Not sex-linked ➡️ Therefore: 👉 Equal male and female incidence ⸻ 🔥 What Prader–Willi is: • Caused by: → Loss of paternal chromosome 15 expression • Key features: → Hypotonia (infancy) → Hyperphagia → obesity → Learning disability → Short stature ⸻ 🧠 Key genetics insight (VERY HIGH-YIELD): 👉 Conditions with autosomal / imprinting mechanisms → Affect both sexes equally ⸻ Why other options are wrong: • Fragile X ❌ → X-linked → males more affected • Rett syndrome ❌ → Almost exclusively females • Klinefelter’s ❌ → Only males (XXY) • Lesch–Nyhan ❌ → X-linked → males

Answer 372

✅ Correct answer ADHD ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Maternal smoking → nicotine exposure in utero ➡️ Leads to: • Dopaminergic dysregulation • Impaired neurodevelopment 👉 Result: ➡️ Increased risk of ADHD ⸻ 🔥 Core exam principle: 👉 ADHD = gene + environment disorder Environmental risks include: • Smoking • Alcohol • Drug exposure • Prematurity ⸻ 🧠 Mechanism (EXAM BONUS): • Nicotine affects: → dopamine pathways • ADHD = disorder of: → dopamine + noradrenaline ⸻ Why others are wrong: • Autism / Asperger’s ❌ → Genetic + neurodevelopmental → Not strongly linked to smoking • PANDAS ❌ → Post-streptococcal autoimmune • Childhood schizophrenia ❌ → Rare + genetic ⸻ 4️⃣ 📘 NICE / MRCPsych concept • ADHD risk factors: → Prenatal exposure (smoking, alcohol) • NICE highlights: → multifactorial aetiology Exam is testing → Risk factors ⸻ 5️⃣ ⭐ High-yield facts • Maternal smoking → ADHD risk ↑ • Prematurity → ADHD risk ↑ • Low birth weight → ADHD risk ↑ • ADHD = most common neurodevelopmental disorder

Answer 373

✅ Answer: Genetic loading ⸻ 💡 Explanation 👉 Strong familial pattern: • Delayed bladder maturation • ADH rhythm issues ⸻ 🔥 High-yield • If one parent affected → ~40% risk • If both → ~70%

Answer 374

✅ Answer: Frontal lobe hypermetabolism 💡 Explanation 👉 Orbitofrontal cortex + basal ganglia circuit: • ↑ activity in: → orbitofrontal cortex → caudate nucleus ⸻ 🔥 High-yield • “OCD = overactive brain loop” • SSRIs ↓ this hyperactivity

Answer 375

✅ Answer: Genetic loading 💡 Explanation 👉 VERY strong heritability (~70–80%) • Siblings risk ↑ (2–3x) • Dopamine dysregulation ⸻ 🔥 High-yield • One of the most heritable psychiatric disorders • Environmental factors = minor compared to genetics

Answer 376

✅ Answer: Raised cortisol levels 💡 Explanation 👉 HPA axis dysregulation: • ↑ Cortisol = chronic stress response • Associated with: → depression → anxiety ⸻ 🔥 High-yield • Especially in adolescent boys • Links to early adversity + stress

Answer 377

✅ Correct answer: A. Large family size ⸻ 💡 Explanation 👉 This is a social/environmental risk factor question ✔ Nocturnal enuresis is strongly associated with: • Low socioeconomic status • Overcrowding • Large family size 👉 Why? • Less parental attention • Delayed toilet training • Environmental stress ⸻ ❌ Why others are wrong • Sleep disorder → may contribute but not strongest predictor • Hirschsprung’s → constipation-related, not primary cause • Pica (non-nutritive eating) → unrelated • Low birth weight → weak association ⸻ 🔥 High-yield facts • Enuresis = multifactorial (biological + social) • Other associations: • Family history (VERY important!) • Constipation • Delayed maturation 👉 Exam trick: 👉 “Social environment” → think enuresis risk

Answer 378

✅ Correct answer: A. Often been physically cruel to animals ⸻ 💡 Explanation 👉 This question tests ODD vs Conduct Disorder (VERY high-yield) ✔ ODD features: • Angry/irritable mood • Argumentative behaviour • Defiance ❌ BUT: • NO severe aggression ❌ Why others are wrong All others are classic ODD symptoms: • Losing temper ✔ • Annoying others ✔ • Refusing compliance ✔ • Blaming others ✔ ⸻ 🔥 High-yield facts • ODD = “annoying child” • Conduct disorder = “dangerous child” • Progression: 👉 ODD → Conduct disorder → Antisocial PD • Animal cruelty = RED FLAG for conduct disorder

Answer 379

✅ Correct Answer: C. 1 in 100 ⸻ 🧠 Why this is correct (exam logic) 👉 Classic age-risk table question ✔ At age 40: ➡ 1 in 100 💣 3 High-yield facts 1. Risk increases exponentially after 35 2. Due to meiotic nondisjunction 3. Most common chromosomal abnormality

Answer 380

✅ Correct answer: C. Mosaicism ⸻ 🧠 Exam logic 👉 Key trigger: • “Normal IQ” or mild features ✔ That means: ➡ Not full trisomy ➡ Only some cells affected ➡ = MOSAICISM 💣 3 HIGH-YIELD FACTS 1. Mosaicism → better cognitive outcome 2. Occurs due to post-zygotic nondisjunction 3. Often missed clinically → milder features ⸻ 🚨 Exam trap 👉 If stem says: • “Normal functioning / mild / subtle” ➡ ALWAYS think mosaicism

Answer 381

✅ Correct answer: D. Premature birth at 35 weeks ⸻ 🧠 Exam logic 👉 Key trigger: • “Risk factor” (not myth / weak association) ✔ Prematurity = strong, established risk factor ⸻ ❌ Why others are wrong (VERY EXAMMY) • Food additives → ❌ MYTH / weak evidence (classic trap) • Refugee status → not established • Rural birth → irrelevant • Older father → weak/non-core association ⸻ 💣 3 HIGH-YIELD ADHD RISK FACTORS 1. Prematurity / low birth weight 👶 2. Maternal smoking / alcohol in pregnancy 🚬 3. Family history (strong genetic component) 🧬

Answer 382

✅ Correct answer: Fragile X syndrome ⸻ 🧠 Exam logic (VERY HIGH-YIELD PATTERN) 👉 Key triggers: • Large ears • Long face • Behavioural issues / ASD traits ➡ = Fragile X ⸻ 🧬 What is Fragile X? • X-linked disorder • Mutation in FMR1 gene • Most common inherited cause of learning disability 💣 3 HIGH-YIELD FRAGILE X FACTS 1. Macroorchidism (post-puberty) 🧠🍒 2. Associated with autism-like features 3. More common/severe in males ⸻ 🚨 Exam pattern you MUST recognise 👉 If they describe: • Long face • Big ears • Behavioural issues ➡ Don’t overthink → Fragile X

Answer 383

✅ Correct answer: A. Melatonin ⸻ 🧠 Exam logic 👉 Key triggers: • Child + ASD + sleep problem ➡ NOT behaviour problem ➡ NOT anxiety ➡ PURE sleep issue ✔ First-line = Melatonin ⸻ ❌ Why others are wrong • Benzos → ❌ NOT used in children long-term • Risperidone → only for severe aggression, not sleep • SSRI → no role ⸻ 💣 3 HIGH-YIELD FACTS (ASD pharmacology) 1. Sleep → Melatonin 🌙 2. Aggression/irritability → Risperidone 😡 3. No drug treats core ASD symptoms ⸻ 🚨 Exam trap 👉 If they say: • ASD + sleep → Melatonin • ASD + aggression → Risperidone

Answer 384

✅ Correct answer: A. Property destruction ⸻ 🧠 Exam logic 👉 Key idea: • ASD → social misunderstanding + rigidity + frustration ➡ leads to: ✔ impulsive / non-malicious acts ✔ property damage (e.g. breaking things) ⸻ ❌ Why others are wrong • Sexual offences → ❌ myth (EXAM TRAP) • Fraud → requires planning/social manipulation • Drug offences → not typical • Motoring → irrelevant ⸻ 💣 3 HIGH-YIELD FORENSIC FACTS (ASD) 1. Offences often unintentional / misunderstanding rules 2. Increased arson + property damage 🔥 3. NOT associated with increased violent crime overall

Answer 385

✅ Correct answer: A. WISC ⸻ 🧠 Exam logic 👉 Key trigger: • “IQ” • “Child (8 years old)” ➡ You need a formal intelligence test ✔ = WISC (Wechsler Intelligence Scale for Children) ⸻ ❌ Why others are wrong (VERY IMPORTANT DIFFERENTIATION) • Connors → ADHD rating scale • ADOS → Autism diagnostic tool • SDQ → behavioural screening • Behavioural tools → NOT IQ

Answer 386

✅ Correct answer: C. Parent training programme ⸻ 💡 Explanation: Conduct disorder: 👉 First-line = parent training programmes (NICE) Medication only if: • severe aggression • risk to others ⸻ 🔥 High-yield facts: • Conduct disorder ≠ ADHD treatment • Parenting interventions = cornerstone • Risperidone = only if severe + short-term

Answer 387

✅ Correct answer: B. Guanfacine ⸻ 💡 Explanation: 👉 Guanfacine: • Treats ADHD • Lowers blood pressure Perfect in this case ✔️ ⸻ 🔥 High-yield facts: • Alpha-2 agonist → ↓ sympathetic tone • Useful when stimulants contraindicated • Also helps with tics + aggression

Answer 388

✅ Correct answer: D. It is associated with hyperphagia ⸻ 💡 Why this is correct (Exam-focused explanation) Kleine–Levin syndrome (KLS) = rare episodic hypersomnia disorder 👉 Classic features (VERY HIGH-YIELD): • Hypersomnia (sleeping 16–20 hrs/day 😴) • Hyperphagia 🍔 • Hypersexuality / disinhibition Episodes: • Last days–weeks • Patient is completely normal between episodes Kleine-Levin syndrome is a very bizarre condition normally seen in adolescent boys. The cause is unknown. It is also associated with emotional and behavioural problems including irritability and aggression. The symptoms often appear abruptly, remain for a few days to weeks and then disappear. This is usually followed by a period of normality followed by another episode. This pattern can repeat for years with a gradual reduction of severity over time.

Answer 389

✅ Correct answer: B. Advanced parental age ⸻ 💡 Why this is correct (Exam-focused explanation) • Advanced parental age (especially paternal) = 👉 MOST CONSISTENTLY REPLICATED RISK FACTOR in ASD • Evidence: • Large cohort studies • Meta-analyses • Dose-response relationship (↑ age → ↑ risk) ⸻ 🧬 Mechanism (VERY HIGH-YIELD) • ↑ de novo mutations in sperm with age • Epigenetic changes • Obstetric complications 👉 Paternal age > maternal age in strength of association ⭐ Also associated • Male sex • Family history (VERY strong genetic component) • Preterm birth • Low birth weight

Answer 390

✅ Correct answer: E. Unrefreshing sleep ⸻ 💡 Why this is correct (Exam-focused explanation) Chronic Fatigue Syndrome (CFS) / Myalgic Encephalomyelitis (ME) 👉 Core diagnostic feature (VERY HIGH-YIELD): • Unrefreshing (non-restorative) sleep 📌 Patients: • Sleep long hours • Wake up just as exhausted ⸻ 🔑 NICE-style key features (EXAM GOLD) • Post-exertional malaise (MOST important concept) • Unrefreshing sleep • Cognitive difficulties (“brain fog”) 🔥 HIGH-YIELD CFS FEATURES (MUST KNOW) ⭐ Core triad (exam favourite) • Fatigue > 3–6 months • Post-exertional malaise ⚠️ • Unrefreshing sleep ⸻ ⭐ Other features • Cognitive impairment • Orthostatic intolerance • Myalgia

Answer 391

✅ Correct answer: B. Oral desmopressin 200 micrograms once daily Desmopressin = ADHD analogue Desmopressin is a synthetic form of vasopressin. ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 This is primary monosymptomatic nocturnal enuresis: • No daytime symptoms • No constipation • Normal development 👉 Already tried: • Enuresis alarm (first-line) ❌ failed ➡️ Next step = Desmopressin ⭐ Stepwise approach 1. Education + reward charts 2. Enuresis alarm (FIRST-LINE definitive) 3. Desmopressin (if alarm fails or not tolerated) ⸻ ⚠️ Exam traps • If alarm already tried → go to desmopressin • If daytime symptoms → think non-monosymptomatic • If constipation → treat that first

Answer 392

✅ Correct answer: A. It is usually diagnosed by the age of 2 ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 Hirschsprung’s disease = congenital absence of ganglion cells • Affects myenteric + submucosal plexus • → failure of bowel relaxation → functional obstruction 📌 Presentation: • Neonatal period OR early childhood • Most diagnosed within first 2 years 👉 Classic feature: • Delayed meconium (>48 hours) 🚨 VERY HIGH-YIELD 👉 More common in boys (≈4:1) 👉 In one study, 15% of patients with Hirschsprung's disease also had Down's syndrome.

Answer 393

✅ Correct answer: C. It is caused by deleted or silenced material from the maternal chromosome ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 Angelman syndrome = maternal problem • Loss of function of UBE3A gene • Located on chromosome 15 (15q11–q13) • Only maternal copy is active in the brain ➡️ If maternal gene is deleted/silenced → disease

Answer 394

**Previous Exam Question** ✅ Correct answer: D. 5% ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 The global prevalence of ADHD in children ≈ 5% • This is the most commonly quoted figure in exams • Supported by large meta-analyses and epidemiological studies • NICE / DSM-based estimates typically fall within ~5% 🔥 HIGH-YIELD FACTS (VERY EXAMINABLE) 1. ADHD prevalence worldwide ≈ 5% in children 2. DSM > ICD prevalence • DSM (ADHD) → broader • ICD-10 (Hyperkinetic disorder) → stricter (~1–2%) 3. Male:female ratio ≈ 3:1 (children)

Answer 395

✅ Correct answer: E. Sphingomyelinase ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 Niemann–Pick disease (Type A & B) = deficiency of acid sphingomyelinase • Leads to accumulation of sphingomyelin • Stored in: • macrophages (foam cells) • liver & spleen → hepatosplenomegaly • CNS → neurodegeneration ⸻ ❌ Why the other options are wrong ⸻ ❌ A. Glucosylceramidase 👉 Gaucher disease • Accumulation of glucocerebroside • “crumpled tissue paper macrophages” ⸻ ❌ B. Phenylalanine hydroxylase 👉 Phenylketonuria (PKU) • ↑ phenylalanine → intellectual disability ⸻ ❌ C. Beta-N-acetylhexosaminidase A 👉 Tay-Sachs disease • GM2 ganglioside accumulation • ❗ NO hepatosplenomegaly (key differentiator) ⸻ ❌ D. Cystathionine beta synthase 👉 Homocystinuria • Marfanoid habitus, lens dislocation (downwards), thrombosis ⸻ 🔥 HIGH-YIELD FACTS (VERY EXAMINABLE) 1. Niemann–Pick = sphingomyelinase deficiency 2. Hepatosplenomegaly PRESENT (unlike Tay-Sachs) 3. Cherry-red macula can be seen (shared with Tay-Sachs ⚠️ trap) ⸻ ⚠️ Classic exam traps • Tay-Sachs vs Niemann-Pick Both: cherry-red spot Only Niemann-Pick: HSM • Mixing up storage diseases: Gaucher → glucocerebrosidase Tay-Sachs → hexosaminidase A Niemann-Pick → sphingomyelinase

Answer 396

✅ Correct answer: D. Often interrupts or intrudes on others ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 This is a core DSM-5 hyperactivity/impulsivity symptom DSM-5 ADHD criteria include: • “Often interrupts or intrudes on others” • e.g. butting into conversations, games, using others’ things without permission ✔ This directly reflects impulsivity ⸻ ❌ Why the other options are wrong ⸻ ❌ A. Disproportionate anger/irritability 👉 Think DMDD / mood disorders / emotional dysregulation • NOT a DSM-5 ADHD criterion • ⚠️ ADHD can have irritability, but it’s not diagnostic ⸻ ❌ B. Fear of abandonment 👉 Classic Borderline Personality Disorder (BPD) • NOT ADHD ⸻ ❌ C. Excessive planning 👉 Opposite of ADHD 😄 • More like OCPD traits / compensatory behaviour ⸻ ❌ E. Time blindness 👉 VERY common in ADHD ❗ BUT: • NOT explicitly in DSM-5 criteria • ⚠️ BIG EXAM TRAP

Answer 397

✅ Correct answer: B. Fluoxetine ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 NICE guidance for children and adolescents with BDD: • First-line = CBT • If medication needed → Fluoxetine is the SSRI of choice ✔ Fluoxetine is: • The most studied SSRI in young people • Has better safety profile (compared to others like paroxetine) • Widely used across CAMHS for: depression OCD BDD

Answer 398

✅ Correct answer: B. Night terrors ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 Pavor nocturnus = Night terrors • A non-REM parasomnia • Occurs during deep sleep (stage N3) • Typically in first third of the night Key features: • Sudden screaming • Intense fear • Autonomic arousal (tachycardia, sweating) • ❗ No recall of the event

Answer 399

✅ Correct answer: E. CBT (including Exposure Response Prevention) ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 According to NICE guidelines (CG31 OCD): • Children & young people (all severities) ➡️ FIRST LINE = CBT with ERP ✔ ERP = core mechanism • Exposure → triggers anxiety • Response prevention → resist compulsion 👉 Leads to habituation + symptom reduction ⸻ ❌ Why the other options are wrong ⸻ ❌ A. Fluoxetine • SSRI → NOT first-line initially in children • Used only if CBT fails / not tolerated ⸻ ❌ B. SSRI + CBT • 🔥 VERY COMMON TRAP • Combination is: • ✔ effective • ❌ NOT first-line in children 👉 NICE: • Start with CBT alone • Add SSRI later if needed ⸻ ❌ C. Family therapy • Supportive only • Not primary treatment ⸻ ❌ D. Clomipramine • Effective for OCD • ❌ Not first-line (side effects, cardiotoxicity)

Answer 400

✅ Correct answer: B. Cognitive behavioural therapy ⸻ 💡 Why this is correct (Exam-focused explanation) 👉 According to NICE (NG206, updated guidance): • Management of CFS/ME focuses on: Energy management (pacing) Symptom control CBT as supportive therapy ✔ CBT is: • Used to help patients cope with symptoms • Improve function and quality of life • ❗ NOT curative (important exam point) ⸻ ❌ Why the other options are wrong ⸻ ❌ A. Graded exercise therapy (GET) • ❗ Previously recommended → NOW NOT recommended (NICE update) • Can worsen post-exertional malaise 👉 VERY HIGH-YIELD CHANGE ⸻ ❌ C. SSRIs • Not core treatment • Only used if comorbid depression/anxiety ⸻ ❌ D. The Lightning Process • Alternative therapy • ❌ Not evidence-based / not NICE recommended ⸻ ❌ E. Methylphenidate • Stimulant • ❌ Not recommended in CFS • No strong evidence ⸻ 🔥 HIGH-YIELD FACTS (VERY EXAMINABLE) 1. Core symptom = post-exertional malaise (PEM) 2. Unrefreshing sleep = essential feature 3. Management = • Pacing (energy management) • CBT (supportive) • ❌ NO GET

Answer 401

✅ Answer: Fragile X syndrome 🧠 Why: • Classic structural abnormality in Fragile X • Cerebellar involvement → motor + cognitive effects 💎 High-yield pearl: 👉 Fragile X = cerebellar vermis ↓ + 4th ventricle ↑

Answer 402

✅ Answers: • Velocardiofacial syndrome (22q11 deletion) • Schizophrenia ⸻ 🧠 Why: 🧠 VCFS: • Developmental disorder • Structural abnormalities: • Cavum septi pellucidi • White matter disruption 🧠 Schizophrenia: • Increased incidence of: • Cavum septi pellucidi • White matter abnormalities (connectivity issues) ⸻ 💎 High-yield pearls: • 🧠 22q11 deletion = schizophrenia risk + structural abnormalities • 🧠 Cavum septi pellucidi = neurodevelopmental marker

Answer 403

✅ Answer: ADHD ⸻ 🧠 Explanation: • Very strong association • Up to ~90% overlap in paediatric populations ⸻ ❌ Traps: • Anxiety → common but not MOST • Autism → possible but less strong link ⸻ 🔥 High-yield: 👉 “Child bipolar = think ADHD first”

Answer 404

✅ Answer: Conduct disorder ⸻ 🧠 Explanation: 👉 Parent Management Training (PMT) = GOLD STANDARD for: • Conduct disorder • Oppositional defiant disorder (ODD) But: • Conduct disorder = more severe behavioural issues ⸻ ❌ Trap: • ADHD → treated with medication • Autism → different interventions ⸻ 🔥 High-yield: 👉 “PMT = conduct disorder treatment”

Answer 405

✅ Correct answer: 👉 B. Family therapy ⸻ 🔍 Explanation (EXAM LOGIC) 👉 Child depression + CBT failed + no meds allowed 👉 Next step = another psychological approach 💥 NICE-style logic: • Children → family dynamics are crucial • Internalising disorders → benefit from family therapy ⸻ ❌ Why others are wrong: • A. DBT ❌ → mainly for borderline / self-harm, not primary depression • C. Mindfulness ❌ → supportive, NOT main treatment • D. CAT ❌ → not standard for children • E. REBT ❌ → not guideline-based in CAMHS ⸻ 💥 High-yield Paper B facts • Child depression pathway: 1. CBT 2. If failed → family therapy / alternative therapy 3. Then medication (Fluoxetine) if needed • Internalising disorders (anxiety/depression): 👉 family involvement = key

Answer 406

✅ Correct answer: 👉 B. Family therapy ⸻ 🔍 Explanation (EXAM LOGIC) 👉 Child depression + CBT failed + no meds allowed 👉 Next step = another psychological approach 💥 NICE-style logic: • Children → family dynamics are crucial • Internalising disorders → benefit from family therapy ⸻ ❌ Why others are wrong: • A. DBT ❌ → mainly for borderline / self-harm, not primary depression • C. Mindfulness ❌ → supportive, NOT main treatment • D. CAT ❌ → not standard for children • E. REBT ❌ → not guideline-based in CAMHS ⸻ 💥 High-yield Paper B facts • Child depression pathway: 1. CBT 2. If failed → family therapy / alternative therapy 3. Then medication (Fluoxetine) if needed • Internalising disorders (anxiety/depression): 👉 family involvement = key

Answer 407

✅ Correct answer: 👉 A. Physical cruelty to animals ⸻ 🔍 Explanation (EXAM LOGIC) 👉 This is a classic ODD vs Conduct Disorder (CD) question. 🟢 ODD = defiant, argumentative, emotional • Temper loss • Irritability • Argumentative behaviour • Annoying others 🔴 Conduct Disorder = VIOLATION of rights • Aggression • Cruelty • Theft • Destruction 👉 Cruelty to animals = conduct disorder ONLY

Answer 408

✅ Correct answer: 👉 D. 5% ⸻ 🔍 Explanation (EXAM LOGIC) 👉 This is a classic epidemiology + stigma question 💥 Key idea: • Most violence is NOT due to mental illness But: • A small proportion (~5%) of homicide offenders have schizophrenia 💥 High-yield Paper B facts • ~5% of homicide offenders → schizophrenia • ~9% of homicides → recent contact with MH services ⚠️ Exam trap: 👉 They LOVE asking this to test risk understanding vs stigma

Answer 409

✅ Correct answer: 👉 B. Reduce sleep latency ⸻ 🔍 Explanation (EXAM LOGIC) 👉 Melatonin = “sleep onset hormone” 💥 Main effect: • Helps you fall asleep faster → ↓ sleep latency (time taken to fall asleep) ⸻ ❌ Why others are wrong: • A. Alter sleep wake cycle ❌ → partially true (circadian role), BUT 👉 NOT the main exam-tested effect

CAMHS Flashcards

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