Old age Flashcards

Question

A 70-year-old has diffuse white-matter hyperintensities on T2/FLAIR MRI. Which condition does this most strongly suggest? A) Alzheimer’s disease B) Small-vessel (vascular) disease C) Lewy Body Dementia D) Schizophrenia

Answer 1

✅ Correct Answer: B) Small-Vessel Disease 💡 Explanation: Deep and periventricular white-matter hyperintensities are classic for chronic microvascular disease, common in older adults and strongly associated with vascular dementia. 🔑 High-Yield Facts: 1. ⚪ Also called leukoaraiosis. 2. 🔥 Correlates with gait disturbance, falls, mood changes. 3. 🔎 Used to distinguish vascular dementia from Alzheimer’s.

Answer 2

✅ Correct Answer: B) Pulvinar sign 💡 Explanation: Variant CJD shows high T2 signal in the pulvinar nucleus of the thalamus — considered pathognomonic. 🔑 High-Yield Facts: 1. 🧠 Sporadic CJD → periodic sharp waves + cortical ribboning. 2. 🔥 Variant CJD → pulvinar sign + psychiatric prodrome. 3. 🧪 Extremely rapid progression (months).

Answer 3

✅ Correct Answer: A) Reduced occipital metabolism (Lewy Body Dementia)

Answer 4

✅ Correct Answer: B) Diffuse slowing 💡 Explanation Delirium typically shows generalised slowing, often theta/delta activity, reflecting global cortical dysfunction. 🔑 3 High-Yield Facts 1. 🌪 EEG is the most sensitive test to distinguish delirium from psychosis. 2. 🚨 In psychosis → normal EEG. 3. 🧠 In hepatic encephalopathy → slowing + triphasic waves (distinct pattern).

Answer 5

✅ Correct Answer: C) 3 Hz spike-and-wave 💡 Explanation Absence seizures show generalized, symmetric 3 Hz spike-and-wave discharges, often provoked by hyperventilation. 🔑 3 High-Yield Facts 1. 🎯 Classic for childhood absence epilepsy. 2. 🌬 Hyperventilation during EEG triggers episodes. 3. 💊 First-line treatment: Ethosuximide (not valproate in MRCPsych!).

Answer 6

✅ Correct Answer: C) Periodic sharp-wave complexes 💡 Explanation In sporadic CJD, EEG often shows bilateral periodic sharp waves occurring at 1–2-second intervals. 🔑 3 High-Yield Facts 1. ⚡ Appears late → MRI DWI is more sensitive early. 2. 🔥 Variant CJD shows pulvinar sign, not periodic waves. 3. 🧠 Rapidly progressive dementia + myoclonus = prompt MRI/EEG.

Answer 7

✅ Correct Answer: B) Polyspike-and-wave discharges 💡 Explanation JME shows generalised polyspike-and-wave bursts, often triggered by sleep deprivation. 🔑 3 High-Yield Facts 1. 🧠 Morning myoclonic jerks are pathognomonic. 2. 💊 First-line treatment = valproate (best control), but avoid in women → lamotrigine/levetiracetam. 3. 💤 Seizures triggered by sleep deprivation, alcohol. Alright — this is very classic MRCPsych + neurology crossover 🔥 Let’s do it properly so you never miss it in the exam again. ⸻ 🧠 Juvenile Myoclonic Epilepsy (JME) 👉 What is it? A genetic generalized epilepsy syndrome that typically presents in: 👉 Adolescence (12–18 years) ⸻ 🧠 Core Clinical Features (EXAM GOLD) 1️⃣ Myoclonic jerks • Sudden, brief, shock-like movements • Usually bilateral upper limbs • Patients often say: “I keep dropping things in the morning” ⸻ 2️⃣ Generalised tonic-clonic seizures • Often occur later • Frequently on awakening ⸻ 3️⃣ ± Absence seizures • Not always present • Can precede other seizure types ⸻ ⏰ Classic Timing Clue 👉 Early morning seizures = HUGE clue ⸻ ⚠️ Triggers • Sleep deprivation 😴 • Alcohol 🍷 • Stress • Flashing lights (photosensitivity) ⸻ 🧠 EEG in JME (VERY HIGH-YIELD) 👉 Classic finding: ➡️ Generalised 4–6 Hz polyspike-and-wave discharges 🧠 What does that mean? • “Polyspike” = multiple rapid spikes • Followed by a slow wave • Generalised (both hemispheres) 💊 Treatment (VERY IMPORTANT) First-line: 👉 Sodium valproate BUT ⚠️: 👉 In women of childbearing age → avoid if possible ⸻ Alternatives: • Levetiracetam ✅ (very commonly used now) • Lamotrigine (less effective for myoclonus) ⸻ 🚫 What to avoid ❌ Carbamazepine ❌ Phenytoin 👉 These can worsen generalized epilepsy ⸻ 🔥 High-yield MRCPsych facts • JME = genetic generalized epilepsy • Onset = adolescence • Myoclonic jerks = morning • EEG = 4–6 Hz polyspike-and-wave • Triggered by sleep deprivation • First-line = valproate (avoid in women) • Alternative = levetiracetam

Answer 8

✅ Correct Answer: A) Hypsarrhythmia 💡 Explanation Hypsarrhythmia = chaotic, high-amplitude, disorganised EEG seen in infantile spasms. 🔑 3 High-Yield Facts 1. ⚡ Treated with vigabatrin (esp. in tuberous sclerosis) or ACTH steroids. 2. 🧠 Severe developmental regression risk. 3. 🎯 Very commonly tested in MRCPsych Part A.

Answer 9

✅ Correct Answer: B) Diffuse slowing (late stage) 💡 Explanation Early Alzheimer’s shows normal EEG, but advanced disease shows generalised slowing. 🔑 3 High-Yield Facts 1. 📉 EEG is not a diagnostic test for Alzheimer’s. 2. 🌪 Delirium causes more severe slowing → helps differentiate. 3. 🔍 EEG more useful for excluding seizure activity.

Answer 10

✅ Correct Answer: C) Functional psychosis 💡 Explanation EEG is normal in primary psychiatric disorders (schizophrenia, mania), which helps distinguish them from delirium, epilepsy, or encephalopathy. 🔑 3 High-Yield Facts 1. 🎯 Normal EEG = supports psychiatric aetiology. 2. 🔥 Delirium always → slowing. 3. ⚡ TLE often → interictal spikes or sharp waves.

Answer 11

✅ Correct answer B. EEG Why EEG is correct (unnecessary initially) Alzheimer’s disease diagnosis relies on: • Clinical history + cognitive assessment • Structural neuroimaging (CT or MRI) • Screening for reversible causes Why the others are necessary These are part of the standard dementia screen to exclude reversible causes: Vitamin B12 • Deficiency → cognitive impairment, neuropathy • Treatable cause Thyroid function tests • Hypothyroidism → depression, cognitive slowing, “pseudodementia” Folate • Nutritional deficiency → cognitive symptoms Liver function tests • Detect hepatic disease → hepatic encephalopathy • Screens for alcohol-related causes ⸻ 4️⃣ 📘 NICE / Guideline Rules NICE NG97 Dementia: Initial assessment should include: Blood tests to exclude reversible causes: • FBC • U&E • Calcium • Glucose • Thyroid function tests • Vitamin B12 ± folate • Liver function tests Neuroimaging: • CT or MRI brain NICE specifically states: ❌ EEG should NOT be used to diagnose Alzheimer’s disease routinely.

Answer 12

**Previous Exam Question** ✅ Correct option: E. Quetiapine Preferred options • ⭐ Clozapine (most effective but requires blood monitoring) • ⭐ Quetiapine (commonly used due to safety/monitoring practicality) ⸻ Why E is correct • Parkinson’s disease psychosis (PDP) is worsened by dopamine blockade • Most antipsychotics antagonise D2 receptors → worsen motor symptoms • Quetiapine has: Relatively low D2 occupancy Stronger 5-HT2A blockade Minimal extrapyramidal side effects • Therefore commonly used when clozapine monitoring is impractical. Clozapine is an atypical antipsychotic that has shown efficacy in treating psychosis in Parkinson's disease without exacerbating motor symptoms. This is because it has a low affinity for D2 dopamine receptors, which are the primary target of drugs used to treat Parkinson's disease. Therefore, it does not significantly interfere with their action. It also has strong antagonistic effects on serotonin 5-HT2A receptors, which contribute to its antipsychotic properties. Why the distractors are wrong • A Sulpiride → potent D2 blocker → markedly worsens parkinsonism • B Haloperidol → high-potency typical antipsychotic → severe EPS risk → contraindicated • C Ziprasidone → significant D2 antagonism → not recommended in PD • D Aripiprazole → partial agonist but still reduces dopaminergic tone → can worsen motor symptoms • Risperidone is an atypical antipsychotic that has high affinity for D2 receptors similar to traditional antipsychotics. Thus, risperidone can significantly worsen motor symptoms in patients with Parkinson's disease and is generally contraindicated. • Amisulpride, a typical antipsychotic, primarily blocks D2 and D3 dopamine receptors. As such, amisulpride can exacerbate motor symptoms in patients with Parkinson's disease and should be avoided. • Olanzapine is another atypical antipsychotic. However, despite having a lower affinity for D2 receptors than typical antipsychotics, it can still worsen Parkinsonian motor symptoms and thus is not usually recommended for use in patients with Parkinson’s disease associated psychosis. Examiner logic: choose the antipsychotic with least dopamine blockade

Answer 13

✅ Correct option: E. Loss of a carer ⸻ • Diogenes syndrome (severe self-neglect syndrome) typically occurs in elderly individuals living alone • A common trigger is loss of the person who previously maintained functioning (spouse/carer) • Leads to: • Social isolation • Failure of daily living activities • Progressive neglect of hygiene and environment • Often follows bereavement or institutional discharge ⭐ High-yield facts to memorise • Typical patient: elderly person living alone • Often previously high-functioning • Mortality is high due to neglect, malnutrition, infections • Hoarding may coexist but is not essential • Frequently comes to attention via neighbours or environmental services • Insight is usually poor → refusal of services

Answer 14

✅ Correct answer A. FDG PET ⸻ 3️⃣ Clear, exam-focused explanation Why FDG PET is correct FDG PET measures cerebral glucose metabolism, reflecting neuronal activity. Different dementias produce distinct metabolic patterns, allowing subtyping when MRI/CT are inconclusive. Typical Alzheimer’s pattern: ➡️ Bilateral temporoparietal hypometabolism ➡️ Posterior cingulate involvement ➡️ Relative sparing of sensorimotor cortex NICE recommends FDG PET when: • Diagnosis uncertain • Alzheimer’s suspected • Need to differentiate from FTD or DLB Why the other options are wrong Perfusion SPECT • Measures cerebral blood flow • Less specific than FDG PET • Not NICE’s preferred modality for AD subtyping I-FP-CIT SPECT (DaTSCAN) • Assesses dopamine transporter function • Used to differentiate DLB/Parkinsonian syndromes from Alzheimer’s • Not for AD confirmation specifically I-MIBG cardiac scintigraphy • Assesses cardiac sympathetic innervation • Supports DLB diagnosis • Not standard for AD differentiation F-DOPA PET • Evaluates dopaminergic pathways • Used in Parkinsonian disorders • Not routine for dementia subtyping ⭐ High-yield facts to memorise FDG PET patterns by dementia type • Alzheimer’s → temporoparietal hypometabolism • Frontotemporal dementia → frontal/anterior temporal hypometabolism • DLB → occipital hypometabolism (“cingulate island sign”)

Answer 15

🔷 Synucleinopathies (α-synuclein) • Parkinson’s disease • Dementia with Lewy bodies • Multiple system atrophy ⸻ 🔶 Tauopathies (tau protein) Includes: 👉 Progressive supranuclear palsy (PSP) 👉 Corticobasal degeneration (CBD → clinical CBS) 👉 Pick’s disease (FTD subtype) 👉 Some Alzheimer’s pathology

Answer 16

These are the official “FTD subtypes”: ⭐ 1. Behavioural variant FTD (bvFTD) ⭐ 2. Semantic variant PPA (svPPA) ⭐ 3. Non-fluent/agrammatic PPA (nfvPPA) 🟡 Behavioural Variant FTD (bvFTD) — MOST COMMON Key early features • Disinhibition • Apathy • Loss of empathy • Socially inappropriate behaviour • Compulsions / stereotyped behaviours • Hyperorality (overeating, sweet foods) • Poor insight Memory: relatively preserved early MRI: frontal ± anterior temporal atrophy ⸻ 🟡 Primary Progressive Aphasia (PPA) Language-dominant presentations. 🟢 Semantic variant (svPPA) • Loss of word meaning • Fluent but empty speech • Impaired object recognition • Anterior temporal atrophy 👉 Pathology: usually TDP-43 ⸻ 🟢 Non-fluent / Agrammatic variant (nfvPPA) • Effortful speech • Agrammatism • Speech apraxia 👉 Pathology: usually tau ⸻ 🟢 Logopenic variant • Word-finding pauses • Impaired repetition ⚠️ Often Alzheimer’s pathology (not true FTLD)

Answer 17

✔ FTLD-tau (tauopathies) Includes: • Pick’s disease • Progressive supranuclear palsy (PSP) • Corticobasal degeneration (CBD) ⸻ ✔ FTLD-TDP (TDP-43) Associated with: • bvFTD • Semantic dementia • FTD-ALS spectrum ⸻ ✔ FTLD-FUS • Rare

Answer 18

✅ Correct answer C. Progressive supranuclear palsy ⸻ Why PSP Key triad: • Early falls ⭐ • Vertical gaze palsy (downward) ⭐ • Axial rigidity Other clues: • Poor levodopa response • Frontal cognitive changes • Pseudobulbar affect ⸻ Why others wrong • Parkinson’s → tremor, asymmetry, late falls • DLB → hallucinations, fluctuations • MSA → autonomic failure • CBS → asymmetric limb findings, alien limb 5️⃣ ⭐ High-yield facts PSP = tauopathy Early postural instability is hallmark

Answer 19

✅ Correct answer C. Corticobasal syndrome ⸻ Why CBS Classic features: • Asymmetric parkinsonism ⭐ • Limb apraxia • Alien limb phenomenon ⭐ • Cortical sensory loss • Myoclonus ⸻ Why others wrong • PSP → symmetric axial features • PD → tremor, levodopa response • MSA → autonomic dysfunction • AD → memory predominant

Answer 20

✅ Correct answer C. Multiple system atrophy ⸻ Why MSA Key feature: ➡️ Prominent autonomic failure ⭐ Other signs: • Parkinsonism • Cerebellar signs • Poor levodopa response ⸻ Why others wrong • PSP → gaze palsy + falls • CBS → cortical signs • PD → autonomic failure later

Answer 21

✅ Correct answer D. Progressive supranuclear palsy ⸻ Tauopathies include: • PSP • Corticobasal degeneration • Pick’s disease (FTD subtype) ⸻ Non-tau disorders: • Synucleinopathies → PD, DLB, MSA • Polyglutamine → Huntington’s ⸻ ⭐ High-yield facts Tau → microtubule protein aggregation

Answer 22

✅ Correct answer C. Behavioural variant FTD ⸻ bvFTD features: • Personality change • Disinhibition • Apathy • Compulsions • Hyperorality Memory early preserved. ⸻ ⭐ High-yield facts bvFTD onset typically <65 ⸻ 🧠 One-line Early behavioural change with spared memory = bvFTD Socially inappropriate + younger onset → FTD

Answer 23

✅ Correct option: C. Education of doctors in recognising and treating depression ⸻ Why C is correct • Most elderly individuals who die by suicide have: • Contact with primary care shortly beforehand • Undiagnosed or undertreated depression • Training clinicians improves: Detection of depression Appropriate treatment Follow-up and safety planning Population studies show reduced suicide rates following GP education programmes Classic evidence (very exam-famous): 👉 Gotland Study — GP training in depression management → significant reduction in suicide rates ⸻ Why the distractors are wrong • A Public education → improves awareness but weak evidence for reducing completed suicide • B Screening high-risk individuals → identifies risk but does not itself reduce mortality without effective treatment • D Psychotherapy → beneficial individually but limited population-level evidence for suicide reduction in elderly • E Antidepressants → treat depression but RCTs have not consistently shown reduction in suicide deaths ⭐ High-yield facts to memorise • Elderly suicide often occurs on the first attempt (higher lethality) • Older men have the highest suicide rates in many countries • Physical illness, pain, bereavement, and isolation are major risk factors • Most elderly suicide victims saw a doctor within months beforehand • Depression is the strongest modifiable risk factor • Firearms (in some countries) and hanging are common methods

Answer 24

✅ Correct answer D. Corticobasal degeneration ⸻ 3️⃣ Clear, exam-focused explanation Key diagnostic clues 👉 Marked asymmetry ⭐ 👉 Cortical signs 👉 Alien limb phenomenon ⭐ 👉 Poor levodopa response 👉 Parkinson-plus syndrome ⸻ Alien limb phenomenon Patient experiences limb as: • Acting independently • Not under voluntary control • “Belongs to someone else” Strongly associated with CBD. ⸻ Why CBD is correct CBD involves degeneration of: ➡️ Cortex (especially parietal/frontal) ➡️ Basal ganglia This produces BOTH: • Cortical features • Parkinsonism ⸻ Why the other options are wrong ❌ DLB • Visual hallucinations • Fluctuating cognition • REM sleep behaviour disorder • Alpha-synuclein pathology ⸻ ❌ MSA • Prominent autonomic failure ⭐ • Cerebellar signs • Symmetric parkinsonism • No cortical signs ⸻ ❌ PSP • Early falls • Vertical gaze palsy ⭐ • Axial rigidity • Symmetric ⸻ ❌ Parkinson’s disease • Rest tremor • Good levodopa response • No cortical deficits ⸻ 4️⃣ 📘 What exam is testing Diagnosis of Parkinson-plus syndromes ⸻ 5️⃣ ⭐ High-yield facts to memorise CBD/CBS hallmarks: • Asymmetric parkinsonism ⭐ • Limb dystonia • Apraxia • Cortical sensory loss • Myoclonus • Alien limb ⭐ • Poor levodopa response

Answer 25

✅ Correct answer: D. AIDS dementia complex Also called: ➡️ HIV-associated neurocognitive disorder (HAND) Key pathology: • Diffuse subcortical white matter damage • Basal ganglia involvement • Frontal–subcortical circuit disruption ⸻ Typical clinical picture (VERY HIGH-YIELD) • Psychomotor slowing ⭐ • Impaired attention • Executive dysfunction • Motor abnormalities (gait, tremor) • Apathy • Retrieval-type memory deficit Classic subcortical profile. High-yield facts to memorise Subcortical dementias include: 🔥 Parkinson’s disease dementia 🔥 Dementia with Lewy bodies (mixed but subcortical dominant) 🔥 Huntington’s disease 🔥 Progressive supranuclear palsy 🔥 Corticobasal syndrome 🔥 Multiple system atrophy 🔥 Vascular subcortical dementia (small vessel disease) 🔥 HIV-associated dementia ⭐ ⸻ Cognitive profile (must memorise) Subcortical = “slow but intact knowledge” • Psychomotor slowing ⭐ • Executive dysfunction • Retrieval memory deficit • Cue-responsive memory ⭐ • Apathy > disinhibition • Early motor signs

Answer 26

✅ Correct answer C. Fluctuating consciousness ⸻ Why fluctuating consciousness is correct Core feature of delirium: ➡️ Disturbance of attention AND awareness ➡️ Fluctuating course over hours to days ⭐ ➡️ Altered level of consciousness Patients may: • Be lucid at one moment • Drowsy or agitated the next • Show marked diurnal variation This does NOT occur in Alzheimer’s dementia. ⭐ High-yield facts to memorise Core delirium triad 🔥 Acute onset 🔥 Fluctuating course 🔥 Inattention ⭐ ⸻ Consciousness Delirium → impaired Dementia → usually normal until late stages ⸻ Attention Delirium → severely impaired ⭐ Alzheimer’s → relatively preserved early

Answer 27

E. Patients can perform tasks such as serial sevens ⸻ Transient Global Amnesia (TGA) involves: 👉 Isolated memory impairment 👉 Preserved attention and consciousness ⭐ 👉 Normal executive function Therefore patients can: • Do serial sevens • Spell WORLD backwards • Follow commands • Engage socially ⸻ Core cognitive deficit ➡️ Severe anterograde amnesia ⭐ ➡️ Variable retrograde amnesia ➡️ Repetitive questioning BUT: • Attention intact • Language intact • Identity preserved • No focal neurological signs Why other options are wrong ❌ Impaired attention Seen in delirium, not TGA. ⸻ ❌ Blank staring/unresponsiveness Suggests seizure or dissociative state. ⸻ ❌ Fully oriented to time Often disoriented to time. ⸻ ❌ Incoherent thought Suggests delirium or psychosis. ⸻ ❌ Motor/sensory symptoms Suggest stroke or TIA, not TGA. Diagnostic features of TGA 🔥 Sudden onset anterograde amnesia 🔥 Preserved alertness and attention 🔥 Repetitive questioning 🔥 No focal deficits 🔥 Resolves within 24 hours ⭐ ⸻ Typical patient profile • Age > 50 • Often triggered by stress/exertion • May follow immersion in cold water • Emotional events

Answer 28

Previous Exam Question The correct answer is SSRIs. Selective Serotonin Reuptake Inhibitors (SSRIs) are known to increase the risk of gastrointestinal (GI) bleeding, especially in the elderly. This is due to their effect on platelet aggregation. Serotonin plays a crucial role in platelet aggregation and by inhibiting its reuptake, SSRIs can lead to reduced platelet aggregation and increased GI bleeding risk. Additionally, the risk is further heightened when SSRIs are used concomitantly with other medications that can cause GI bleeding such as NSAIDs or anticoagulants. The risk of bleeding is elevated further in the following:- Elderly (>65) Alcohol / drug misuse Coronary artery disease / hypertension Liver disease History of gastrointestinal bleed / stroke / major bleed Those with a predisposition to bleeding Labile international normalised ratio (INR) Medication usage predisposing to bleeding (warfarin, NSAIDS, steroids) Peptic ulcer Renal disease Smoking

Answer 29

The severity of Alzheimer's: Mild = MMSE 21 to <26 Moderate = MMSE 10 to <21 Severe = MMSE <10

Answer 30

✅ Correct Answer Iron 🧠 Explanation Activated charcoal works by adsorbing drugs in the gastrointestinal tract, preventing absorption. However, it does NOT bind well to certain substances, especially metals. 👉 Iron is a metal, so charcoal does not adsorb it effectively, making it not indicated. Instead, iron poisoning is treated with: • Deferoxamine (chelation therapy) 🔥 5 High-Yield Facts (MRCPsych Paper B) 1️⃣ Substances charcoal does NOT bind Think “CHIMP” • Corrosives (acids/alkalis) • Hydrocarbons • Iron • Metals (e.g., lithium) • Pesticides / petroleum products 👉 Iron and lithium are the classic exam answers. ⸻ 2️⃣ Timing rule Activated charcoal is most effective within 1 hour of ingestion. ⸻ 3️⃣ Contraindications Do NOT give charcoal if: • Reduced consciousness without airway protection • Risk of aspiration • Corrosive ingestion ⸻ 4️⃣ Classic psychiatric overdose where charcoal is used • TCA overdose • Paracetamol overdose • Antipsychotic overdose ⸻ 5️⃣ Iron overdose hallmark Iron poisoning causes: • Vomiting • Metabolic acidosis • GI bleeding • Shock Treatment: Deferoxamine

Answer 31

✅ Correct answer C. Alzheimer’s disease ⸻ 3️⃣ Clear, exam-focused explanation Why Alzheimer’s disease is correct • Accounts for ~60–70% of all dementia cases • Characterised by: Progressive episodic memory impairment Early hippocampal involvement • Pathology: β-amyloid plaques Neurofibrillary tangles (tau) ⸻ Why the other options are wrong A. Vascular dementia • Second most common dementia • Often stepwise decline • Associated with vascular risk factors B. Dementia with Lewy bodies • Core features: • Visual hallucinations • Fluctuating cognition • Parkinsonism D. Frontotemporal dementia • Behavioural or language changes precede memory impairment • Occurs more commonly before age 65 E. Mixed dementia • Common in very elderly • Usually Alzheimer’s + vascular pathology • Not the single most common diagnosis ⭐ High-yield facts to memorise • Alzheimer’s disease = 60–70% of dementias • Earliest cognitive deficit = episodic memory • First brain structure affected = hippocampus • Women have higher prevalence due to longer lifespan • Mean survival after diagnosis = 4–8 years

Answer 32

**Previous Exam Question** ✅ Correct answer D. Alzheimer’s disease ⸻ Why Alzheimer’s disease is correct • Remains the most common cause of dementia even before age 65 • Typically presents with: Progressive episodic memory impairment Executive dysfunction ⸻ Why the other options are wrong A. Vascular dementia • Second most common cause • Associated with cerebrovascular disease B. Frontotemporal dementia • Relatively more common in younger patients • But not the most common overall C. Dementia with Lewy bodies • Usually occurs after age 65 E. Normal pressure hydrocephalus • Rare cause • Presents with gait disturbance + urinary incontinence + dementia ⭐ High-yield facts to memorise Distribution of early-onset dementia: 1. Alzheimer’s disease 2. Vascular dementia 3. Frontotemporal dementia FTD hallmark: • Behavioural disinhibition • Personality change • Language dysfunction

Answer 33

✅ Correct answer C. 40% ⸻ Clear, exam-focused explanation Key epidemiological rule: • Prevalence doubles every 5 years after age 60 ⭐ High-yield facts to memorise • Alzheimer’s risk doubles every 5 years after age 60 • Prevalence at 85 years ≈ 30–40% • Age is the strongest risk factor • Women have higher prevalence due to longer lifespan

Answer 34

✅ Correct answer C. Misinterpreting shadows as people Why this option is correct • Visual hallucinations or illusions are not normal ageing • Misinterpreting shadows as people = visual misperception • Strongly associated with: Dementia with Lewy bodies Parkinson’s disease dementia Advanced Alzheimer’s disease • Suggests pathological neurodegeneration 📘 NICE / ICD-11 / DSM-5 rules DSM-5 Major Neurocognitive Disorder Requires: • Significant cognitive decline • Interference with independence • Not due to delirium Psychotic symptoms (hallucinations) indicate neurodegenerative pathology. Exam concept tested: Diagnosis / distinguishing normal ageing vs dementia ⸻ 5️⃣ ⭐ High-yield facts to memorise • Visual hallucinations are classic in Lewy body dementia • Normal ageing features: slower processing mild word-finding difficulty occasional forgetfulness • Dementia features: hallucinations functional impairment persistent memory loss 🧠 One-line exam answer Visual hallucinations or misperceptions indicate dementia rather than normal ageing.

Answer 35

✅ Correct answer B. 10% Why 10% is correct • MCI is a risk state for dementia • Longitudinal studies show: ➡ ~10% per year conversion rate • Risk highest for amnestic MCI This highlights the importance of monitoring and early intervention. MCI is use as a proxy measure to identify individuals at risk of Alzheimer's disease, though in clinical practice it is a description of symptoms rather than a diagnosis. 📘 NICE / ICD-11 / DSM-5 rules DSM-5 Mild Neurocognitive Disorder Criteria: • Modest cognitive decline • Independence preserved • May progress to dementia ⸻ ⭐ High-yield facts to memorise • MCI → dementia ~10% per year • Amnestic MCI often progresses to Alzheimer’s disease • Some patients remain stable or improve • Functional independence preserved

Answer 36

✅ Correct answer D. 40% ⸻ Why 40% is correct The Lancet Commission (2020) estimated: ➡ ~40% of dementia cases are preventable Through modification of risk factors. ⸻ Key modifiable risk factors • Hypertension • Smoking • Obesity • Diabetes • Physical inactivity • Depression • Hearing loss • Low education • Social isolation • Traumatic brain injury • Air pollution • Excess alcohol ⭐ High-yield facts to memorise • 40% of dementia potentially preventable • Biggest modifiable risk factor: hearing loss • Midlife hypertension strongly linked to dementia • Smoking and inactivity increase risk

Answer 37

✅ Correct answer A. Quitting smoking ⸻ Why this option is correct • Smoking is a major modifiable risk factor for dementia • Associated with: • Vascular dementia • Alzheimer’s disease • Smoking causes: • Cerebrovascular disease • Oxidative stress • Neuroinflammation • Stopping smoking reduces vascular and neurodegenerative risk ⭐ High-yield facts to memorise • 40% of dementia cases are potentially preventable • Smoking increases risk of vascular and Alzheimer’s dementia • Midlife vascular risk factors strongly predict dementia • Lifestyle modification is the most effective prevention strategy

Answer 38

✅ Correct answer B. Hippocampus and temporal cortex ⸻ Why this option is correct • Alzheimer’s pathology begins in the hippocampus and entorhinal cortex • These structures are critical for memory encoding • Early damage causes episodic memory impairment Disease progression: 1. Hippocampus 2. Medial temporal lobe 3. Parietal association cortex 4. Frontal cortex ⸻ Why the other options are wrong A. Frontal cortex • Affected later • Responsible for executive dysfunction ⸻ C. Basal ganglia • Associated with movement disorders (Parkinson’s disease) ⸻ D. Cerebellum • Coordinates movement and balance • Not involved early in dementia ⸻ E. Brainstem • Regulates autonomic functions • Not primary site in Alzheimer’s ⸻ 📘 NICE / ICD-11 / DSM-5 rules DSM-5 Major Neurocognitive Disorder due to Alzheimer’s disease: • Insidious onset • Gradual progression • Early memory impairment Exam concept tested: Neuroanatomy / pathology ⸻ ⭐ High-yield facts to memorise • Alzheimer’s begins in hippocampus • Early symptom = episodic memory loss • Pathology: • Amyloid plaques • Tau tangles

Answer 39

✅ Correct answer B. Hippocampal atrophy ⸻ Why this option is correct • The earliest structural imaging change in Alzheimer’s disease is: Medial temporal lobe atrophy • Particularly hippocampal atrophy MRI findings: • Enlarged temporal horns • Reduced hippocampal volume ⸻ Why the other options are wrong A. Frontal lobe atrophy • More typical of frontotemporal dementia ⸻ C. Cerebellar atrophy • Seen in alcohol-related brain damage ⸻ D. Caudate atrophy • Classic finding in Huntington’s disease ⸻ E. Brainstem atrophy • Seen in progressive supranuclear palsy ⭐ High-yield facts to memorise • Early MRI finding = medial temporal lobe atrophy • Hippocampal atrophy correlates with memory impairment • CT may show generalised cortical atrophy later

Answer 40

✅ Correct answer D. Episodic memory impairment ⸻ Why episodic memory impairment is correct • Earliest brain structure affected in Alzheimer’s disease = hippocampus • Hippocampus is responsible for encoding new episodic memories • Early symptoms therefore include: • Forgetting recent conversations • Repeating questions • Difficulty learning new information This is the most sensitive early cognitive deficit.

Answer 41

✅ Correct answer D. Alzheimer’s disease ⸻ Why Alzheimer’s disease is correct • Early episodic memory impairment • As disease progresses: • Visuospatial deficits • Executive dysfunction Failure to draw intersecting pentagons indicates visuospatial impairment, commonly seen in Alzheimer’s disease.

Answer 42

✅ Correct answer E. Excessive hoarding of rubbish ⸻ Why this option is correct • Syllogomania refers to compulsive hoarding, especially accumulation of useless objects or rubbish. • It is classically associated with: Hoarding disorder Diogenes syndrome Some dementias (especially frontotemporal dementia) • The word originates from Greek: “Sylloge” = collection “-mania” = compulsion or obsession ⸻ Why the other options are wrong A. Abnormal belief that one is divinely inspired • Term = entheomania • Refers to delusional belief of divine inspiration. ⸻ B. Irrational predilection for stealing • Term = kleptomania • Impulse-control disorder involving recurrent theft. ⸻ C. Abnormal tendency towards grand or grandiose behaviour • Term = megalomania • Associated with mania or narcissistic traits. ⸻ D. Pathological indecisiveness • Term = aboulomania • Severe inability to make decisions. ⸻ 4️⃣ 📘 NICE / ICD-11 / DSM-5 rules DSM-5 Hoarding Disorder Key features: • Persistent difficulty discarding possessions • Perceived need to save items • Accumulation causing clutter • Distress or functional impairment Exam concept tested: Psychopathology terminology / behavioural syndromes

Answer 43

Post stroke depression is common (30-40%). Lesions in the vicinity of the left hemisphere basal ganglia tend to play a crucial role in the development of major depression after the acute stage of stroke (Herrmann, 1995). Treatment needs to take into consideration, whether the stoke was caused by an infarction or haemorrhage (there is an association between SSRI and intracerebral haemorrhage), any medical co-morbidity and other treatment (e.g. interactions with SSRI and warfarin). The following table summarises the Maudsley recommendations for post stroke depression: Post stroke depression - Maudsley key recommendations SSRIs (fluoxetine and citalopram are most studied and seem effective and safe) Nortriptyline is a suitable alternative and does not appear to increase the risk of bleeding If patients are on warfarin then citalopram and escitalopram may be preferred If patient is prescribed DOAC (direct-acting oral anticoagulants) then citalopram and escitalopram may be preferred Prophylaxis In view of the high incidence of depression following stroke there has been considerable research into antidepressant prophylaxis. The following have been shown to be effective at preventing post stroke depression:- Nortriptyline Fluoxetine Escitalopram Duloxetine Sertraline Mirtazapine Mianserin appears to be ineffective. The routine use of antidepressants for prophylaxis in the elderly is however not recommended due to the risk of bone fracture, falls, and seizures (from SSRIs) outweighing the benefits.

Answer 44

**Previous Exam Question** ✅ Correct answer E. Nortriptyline ⸻ Why this option is correct • Post-stroke depression (PSD) commonly treated with: SSRIs Nortriptyline • However this patient has a history of gastrointestinal bleeding. • SSRIs increase GI bleeding risk by impairing platelet aggregation. Mechanism: • Platelets require serotonin uptake for clot formation. • SSRIs block serotonin uptake → reduced platelet aggregation → bleeding risk. Therefore: • Avoid SSRIs in patients with previous GI bleeding where possible. • Nortriptyline (a secondary amine TCA) is recommended in Maudsley for post-stroke depression and does not increase bleeding risk.

Answer 45

✅ Correct answer B. Haloperidol ⸻ Explanation (Exam-focused) According to NICE Delirium Guideline (CG103): • Non-pharmacological measures are first-line in delirium. • If the patient is distressed, agitated, or poses risk of harm, medication may be used. NICE recommends: ➡ Low-dose haloperidol as first-line pharmacological treatment Used short-term only and at low doses. Typical reasons to give it: • Severe agitation • Distress • Risk to patient or others • Non-drug measures ineffective ⸻ Why the other options are wrong Lithium • Mood stabiliser • No role in delirium ⸻ Quetiapine • Can be used if haloperidol contraindicated • Example: Parkinson’s disease or Lewy body dementia Not first-line per NICE. ⸻ Lorazepam ⚠️ Important exam rule Benzodiazepines are NOT used in delirium except in: • Alcohol withdrawal delirium (delirium tremens) • Benzodiazepine withdrawal Otherwise they worsen delirium. ⸻ Risperidone • May be used occasionally • But NICE specifies haloperidol first-line ⸻ ⭐ High-Yield MRCPsych Facts • Delirium treatment hierarchy 1️⃣ Treat underlying cause 2️⃣ Non-pharmacological management 3️⃣ If distress/agitation → low-dose haloperidol

Answer 46

✅ Correct option: C. Sexual intercourse ⸻ Why C is correct • Transient Global Amnesia (TGA) is classically precipitated by sudden physical exertion or emotional stress • Sexual intercourse is a well-recognised trigger due to: Valsalva manoeuvre Acute sympathetic surge Venous congestion affecting hippocampal circulation • TGA presents with: - Sudden anterograde amnesia (cannot form new memories) - Mild retrograde amnesia - Preserved identity and alertness - Repetitive questioning - No focal neurological signs - Resolution within 24 hours ⭐ High-yield facts to memorise • Typical age: >50 years • Duration: 1–24 hours (usually 6–8 hours) • Recurrence: uncommon (~5–10%) • MRI may show transient hippocampal lesions (delayed DWI positivity) • No increased long-term risk of stroke or dementia • Patients repeatedly ask: “Where am I? What happened?” ⸻ ⚠️ Common MRCPsych exam traps • Confusing TGA with dissociative amnesia (psychological cause, identity disturbance) • Confusing with transient epileptic amnesia (brief, recurrent, often on waking) • Mistaking it for delirium (would have impaired attention and fluctuating consciousness) • Thinking caffeine or sensory stimuli are triggers

Answer 47

✅ Correct answer C. Transient global amnesia (TGA) Dissociative Amnesia is an incorrect option because it's characterised by inability to recall important personal information (loss of autobiographical memory) usually associated with stressful or traumatic events rather than specific episodic memory disturbance during sex. This disorder tends to persist for longer periods and doesn't resolve spontaneously in a few hours. The following diagnostic criteria have emerged (Hodges, 1990): (1) attacks must be witnessed and information available from an observer who was present for most of the attack (2) there must be clear cut anterograde amnesia during the attack (3) clouding of consciousness and loss of personal identity must be absent and the cognitive impairment limited to amnesia (4) there should be no accompanying focal neurological symptoms and functionally relevant focal signs (5) epileptic features must be absent (6) attacks must resolve within 24 hours (7) patients with recent head injury or known active epilepsy are excluded Epidemiological studies which have applied these criteria have established that thromboembolic cerebrovascular disease plays no part in the causation of transient global amnesia, but the incidence of migraine in patients with transient global amnesia is greater than would be expected in the general population. A small minority of cases with unusually brief, and recurrent, attacks eventually manifest temporal lobe epilepsy. Epilepsy is thought to be unlikely as a cause of TGA (Owen, 2007). EEG recording is characteristically normal after an attack and even when EEG is performed during the attack it is unremarkable TGA often begins with a Valsalva maneuver (Owen, 2007). Precipitants often include exertion, cold, pain, emotional stress, and sexual intercourse. Hence, it is possible that TGA may result from different mechanisms such as venous congestion with Valsalva-like activities before symptom onset, arterial thromboembolic ischaemia and vasoconstriction due to hyperventilation.

Answer 48

✅ Correct answer E. Chronic subdural haematoma ⸻ Explanation (exam-focused) A chronic subdural haematoma occurs when venous bleeding accumulates slowly between the dura and arachnoid mater, usually from bridging vein rupture. Key exam clues in this question: • Elderly patient • Subacute cognitive decline (weeks–months) • Personality change • Fluctuating consciousness This combination is classic for chronic subdural haematoma. Often there is: • minor head trauma weeks earlier • patient may not remember it ⸻ Why the other options are wrong Normal pressure hydrocephalus Classic triad: • Gait disturbance • Urinary incontinence • Cognitive impairment Symptoms develop slowly, not rapidly over 2–3 months with fluctuating consciousness. ⸻ Alzheimer’s disease Features: • Gradual memory decline • Progressive course • No fluctuating consciousness ⸻ Depressive stupor Would show: • Severe psychomotor retardation • Mutism • Depressive symptoms Not fluctuating consciousness. ⸻ Prion disease (CJD) Although rapid dementia occurs, the vignette usually includes: • Myoclonus • Ataxia • Visual disturbances • EEG changes Also progresses more aggressively. ⸻ ⭐ High-yield MRCPsych facts • Chronic subdural haematoma • common in elderly • due to brain atrophy → stretched bridging veins • Presentation often includes: • personality change • confusion • fluctuating consciousness • headache • focal neurological signs • Onset: • weeks to months after minor trauma • Diagnosis: • CT head • Treatment: • surgical drainage

Answer 49

✅ Correct answer D. Recurrent well-formed visual hallucinations and REM sleep behaviour disorder ⸻ Explanation (Exam-focused) Lewy body dementia (DLB) is characterised by alpha-synuclein Lewy bodies in the brain. According to ICD-11 diagnostic guidance, the diagnosis is supported by core clinical features. Core clinical features of Lewy body dementia 1️⃣ Recurrent well-formed visual hallucinations 2️⃣ Fluctuating cognition/alertness 3️⃣ REM sleep behaviour disorder (RBD) 4️⃣ Spontaneous parkinsonism Having two or more strongly supports Lewy body disease. The vignette already hints at LBD because: • Visuospatial impairment • Executive dysfunction • Memory relatively preserved early These are classic early cognitive features of LBD. Adding visual hallucinations + REM sleep behaviour disorder strongly supports the diagnosis.

Answer 50

✅ Correct answer B. Citalopram ⸻ Explanation (Exam-focused) Pathological crying after stroke is called: Pseudobulbar affect (PBA) also known as post-stroke emotionalism. It causes: • Sudden uncontrollable crying • Emotional expression disproportionate to mood • Emotional lability It occurs due to disruption of corticobulbar pathways controlling emotional expression. ⸻ First-line pharmacological treatment SSRIs Examples: • Citalopram • Sertraline • Fluoxetine These help regulate serotonergic pathways involved in emotional control. Therefore citalopram is the best answer.

Answer 51

✅ Correct answer B. CAMCog Why CAMCog is correct • CAMCog (Cambridge Cognitive Examination) is the cognitive component of the CAMDEX battery. • Designed for comprehensive neuropsychological assessment in dementia and MCI. • Evaluates multiple domains: Orientation Language Memory Attention Praxis Perception Executive functioning Used widely in memory clinics and research settings. ⭐ High-yield facts to memorise • CAMDEX = Cambridge Mental Disorders of the Elderly Examination. • It consists of: Structured clinical interview Informant interview CAMCog cognitive test • CAMCog score ranges 0–107. • Higher scores = better cognition. • Particularly useful for early dementia and MCI assessment.

Answer 52

✅ Correct answer A. Rivastigmine ⸻ Explanation (exam-focused) Step 1 — First-line treatment for Lewy body dementia Lewy body dementia has a marked cholinergic deficit, so cholinesterase inhibitors are first-line. These include: • Donepezil • Rivastigmine • Galantamine They improve: • cognition • hallucinations • attention • behavioural symptoms ⸻ Step 2 — The pharmacology trap The question adds: Patient taking a strong CYP2D6 inhibitor This affects metabolism. Therefore: • CYP2D6 inhibitors may increase levels of donepezil or galantamine • Rivastigmine bypasses CYP metabolism ➡️ Safest option = Rivastigmine Why the other options are wrong Donepezil Good treatment for LBD but: • metabolised via CYP2D6 • interaction risk with CYP2D6 inhibitors ⸻ Galantamine Also metabolised via CYP2D6 Same interaction problem. ⸻ Memantine Used in: • moderate–severe Alzheimer’s • sometimes adjunct in dementia Not first-line for LBD cognitive symptoms. ⸻ Quetiapine Used for: • psychosis in Lewy body dementia But not for cognitive impairment. ⸻ ⭐ High-yield MRCPsych facts Lewy body dementia treatment hierarchy First-line: • Donepezil • Rivastigmine These improve: • cognition • hallucinations • attention fluctuations

Answer 53

✅ Correct answer C. Dementia with Lewy bodies ⸻ 3️⃣ Clear exam-focused explanation This vignette contains two key core features of Lewy body dementia: 1️⃣ Fluctuating cognition • Variation in alertness, attention and confusion • Patients may appear normal at times and very confused at others 2️⃣ Parkinsonism • Bradykinesia • Rigidity • Slowed movements These features together strongly suggest Dementia with Lewy bodies (DLB). Additional supportive clues in the vignette: • Episodes of blank staring / detachment → attentional fluctuations • Language pauses → executive dysfunction ⸻ Why the other options are wrong A. Alzheimer’s disease Typical early feature: ➡️ episodic memory loss Other features appear later. Fluctuating cognition and early parkinsonism are not typical. ⸻ B. Dementia due to Parkinson’s disease Key diagnostic rule: ➡️ Parkinson’s disease must precede dementia by >1 year In this case: • Cognitive decline occurred first • Parkinsonism appeared later Therefore this is DLB, not Parkinson’s disease dementia. ⸻ D. Frontotemporal lobar degeneration Early symptoms: • behavioural disinhibition • loss of empathy • personality change Parkinsonism and fluctuating cognition are not typical early features. ⸻ E. Vascular dementia Typical features: • stepwise decline • focal neurological deficits • vascular risk factors Not fluctuating cognition.

Answer 54

✅ Correct answer E. FDG-PET or perfusion SPECT should be used where diagnosis is uncertain and frontotemporal dementia is suspected ⸻ 3️⃣ Clear exam-focused explanation According to NICE NG97 (Dementia: assessment, management and support): Structural imaging All patients with suspected dementia should usually undergo structural imaging to exclude other causes. Preferred imaging: • MRI brain (preferred when available) • CT if MRI not possible ⸻ Functional imaging If the diagnosis remains uncertain after clinical assessment and structural imaging, NICE recommends: ➡ FDG-PET or perfusion SPECT Particularly useful when frontotemporal dementia (FTD) is suspected. These scans detect patterns of cerebral hypometabolism or hypoperfusion.

Answer 55

✅ Correct answer A. Aspirin

Answer 56

**Previous Exam Question** ✅ Correct answer A. Aspirin First-line management in vascular dementia Treatment focuses on: • Antiplatelet therapy • Control of vascular risk factors Examples: • Aspirin • Statins • Blood pressure control • Diabetes management • Smoking cessation Thus aspirin is appropriate.

Answer 57

✅ Correct answer B. Visual hallucinations are not normally associated with an auditory component ⸻ Explanation Charles Bonnet syndrome occurs in people with significant visual impairment and is characterised by complex visual hallucinations with preserved insight and no psychiatric disorder. Key point: ➡️ The hallucinations are almost exclusively visual. Therefore auditory hallucinations are usually absent, although rare cases with auditory elements have been reported. This is why the exam statement says “not normally associated with an auditory component”, rather than “never associated.” ⭐ High-yield MRCPsych facts (very testable) 1️⃣ Charles Bonnet syndrome = visual hallucinations + visual impairment Common causes: • Macular degeneration • Cataracts • Glaucoma • Diabetic retinopathy ⸻ 2️⃣ Insight is usually preserved Patients typically say: “I know these images are not real.” This differentiates CBS from psychosis. ⸻ 3️⃣ Hallucinations are complex Examples: • People in old-fashioned clothes • Animals • Faces • Geometric patterns ⸻ 4️⃣ Patients are usually elderly Because visual impairment is more common. ⸻ 5️⃣ Management First-line: • Reassurance • Improve vision if possible Antipsychotics are rarely needed.

Answer 58

✅ Correct answer D. I-FP-CIT SPECT should be used where Lewy body dementia is suspected ⸻ Explanation When Dementia with Lewy Bodies (DLB) is suspected but the diagnosis remains uncertain, NICE recommends dopamine transporter imaging: ➡️ I-FP-CIT SPECT (DaTSCAN) This scan measures dopamine transporter activity in the striatum. In Lewy body dementia: • Dopaminergic neurons degenerate • Dopamine transporter activity decreases • The scan shows reduced uptake in the basal ganglia This helps distinguish DLB from Alzheimer’s disease. ⸻ Why the other options are wrong A. Apolipoprotein E genotyping ❌ Not recommended routinely. Reason: • APOE ε4 increases risk • But it is not diagnostic Therefore NICE does not recommend routine genetic testing for dementia diagnosis. ⸻ B. CT preferred over MRI ❌ MRI is more sensitive for: • Vascular lesions • White matter disease • Lacunar infarcts CT is often used initially due to availability, but MRI is superior. ⸻ C. CSF tau should not be used ❌ Incorrect. CSF biomarkers can help differentiate dementia types, including: • Amyloid-β • Total tau • Phosphorylated tau They are used mainly in specialist settings. ⸻ E. I-MIBG cardiac scintigraphy for FTD ❌ Incorrect. I-MIBG is used in Lewy body dementia, not FTD. It detects cardiac sympathetic denervation seen in DLB.

Answer 59

✅ Correct answer B. Dementia with Lewy bodies ⸻ Explanation Acetylcholinesterase inhibitors (AChE-I) increase acetylcholine by inhibiting its breakdown. Examples: • Donepezil • Rivastigmine • Galantamine They are effective in dementias where cholinergic deficit is prominent. One of the strongest cholinergic deficits occurs in Lewy body dementia, which is why AChE inhibitors are first-line treatment.

Answer 60

✅ Correct answer A. Ability to make a will ⸻ Explanation Testamentary capacity refers to a person’s legal and mental ability to make or alter a valid will. The person making the will is called the testator. The legal test comes from the case: ⚖️ Banks v Goodfellow This case established the criteria for determining whether a person has capacity to make a will. ⸻ Banks v Goodfellow criteria (high-yield) To have testamentary capacity, a person must: 1️⃣ Understand the nature and effect of making a will 2️⃣ Understand the extent of their property 3️⃣ Understand the claims of potential beneficiaries 4️⃣ Not be affected by a mental disorder that distorts decision-making ⸻ Why the other options are wrong Ability to testify in court ❌ This refers to competence to testify, not testamentary capacity.

Answer 61

**Previous Exam Question** ✅ Correct answer E. DaT scan ⸻ Explanation A DaT scan (dopamine transporter scan) is used to visualise dopaminergic neuron activity in the striatum. Technique: • I-FP-CIT SPECT (DaTSCAN) In Dementia with Lewy bodies (DLB): • Degeneration of dopaminergic neurons occurs • Dopamine transporter uptake decreases Therefore the scan shows: ➡️ Reduced uptake in the basal ganglia In Alzheimer’s disease: • Dopamine pathways are usually preserved • DaT scan is normal Thus this investigation helps differentiate DLB from Alzheimer’s disease.

Answer 62

**Previous Exam Question** ✅ Correct answer Clozapine ⸻ Explanation This patient has Parkinson’s disease psychosis (PDP). Common causes: • dopaminergic medication • disease progression Management hierarchy 1️⃣ Reduce dopaminergic medication if possible 2️⃣ If psychosis persists → use an antipsychotic with minimal dopamine blockade Preferred options • ⭐ Clozapine (most effective but requires blood monitoring) • ⭐ Quetiapine (commonly used due to safety/monitoring practicality) Clozapine works because it has minimal D2 blockade, so it does not significantly worsen motor symptoms.

Answer 63

✅ Correct answer: Charles Bonnet Syndrome Todd syndrome is another term for Alice in Wonderland syndrome which is a neurological condition in which a patient's sense of body image, space, and/or time are distorted. Sufferers may experience micropsia or Lilliputian hallucinations, macropsia, or other sensorial distortions, including altered sense of velocity. Diogenes syndrome is a condition characterized by extreme self-neglect, social withdrawal, lack of shame, apathy, and compulsive hoarding of rubbish. It is found mainly in the elderly and is associated with progressive dementia.

Answer 64

✅ Correct answer Haloperidol ⸻ Explanation Studies in elderly patients undergoing surgery (especially hip surgery) show that low-dose haloperidol prophylaxis can: ✔ reduce severity of delirium ✔ reduce duration of delirium However, an important exam nuance: ❗ It does NOT reduce the incidence of delirium. This distinction is commonly tested. Delirium Mneumonic: PINCH ME

Answer 65

**Previous Exam Question** ✅ Correct answer Donepezil ⸻ Explanation Lewy body dementia has a marked cholinergic deficit, even greater than that seen in Alzheimer’s disease. Because of this, acetylcholinesterase inhibitors (AChE-I) are the first-line treatment for cognitive symptoms. Examples: • Donepezil • Rivastigmine • Galantamine Among these, Donepezil has the strongest evidence base from randomized trials showing improvements in: • cognition • attention • executive function • neuropsychiatric symptoms (especially hallucinations) This is why NICE commonly recommends Donepezil first line.

Answer 66

✅ Correct answer Haloperidol ⸻ Explanation Studies in elderly patients undergoing surgery (especially hip surgery) show that low-dose haloperidol prophylaxis can: ✔ reduce severity of delirium ✔ reduce duration of delirium However, an important exam nuance: ❗ It does NOT reduce the incidence of delirium. This distinction is commonly tested. Delirium Mneumonic: PINCH ME

Answer 67

**Previous Exam Question** ✅ Correct answer Ropinirole ⸻ Explanation Ropinirole is a dopamine agonist used in: • Parkinson’s disease • Restless legs syndrome A well-known adverse effect of dopamine agonists is impulse control disorders (ICDs). These include: • pathological gambling • hypersexuality • binge eating • compulsive shopping • impulsive or socially inappropriate behaviour The patient’s sudden disinhibited behaviour and binge eating strongly suggest dopamine agonist–induced impulse control disorder. ⸻ Mechanism Dopamine agonists stimulate the mesolimbic reward pathway (D3 receptors in the nucleus accumbens). This leads to: ➡️ increased reward-seeking behaviour ➡️ impaired impulse control.

Answer 68

✅ Correct answer Vertical gaze palsy ⸻ Explanation The hallmark sign of Progressive Supranuclear Palsy (PSP) is: ➡️ Vertical gaze palsy, especially difficulty with downward gaze. This occurs due to midbrain degeneration affecting vertical gaze centres. Patients often have difficulty: • looking downwards • reading • descending stairs ⸻ Other key PSP features (very testable) • Early postural instability • Frequent backward falls • Axial rigidity • Pseudobulbar palsy • Frontal executive dysfunction ⸻ Why the other options are wrong Alien limb phenomenon ❌ Characteristic of: ➡️ Corticobasal degeneration (CBD) Patients feel the limb acts independently of their control. ⸻ Fluctuating cognition ❌ Classic for: ➡️ Dementia with Lewy bodies ⸻ Sensitivity to antipsychotics ❌ Also typical of: ➡️ Lewy body dementia Patients may develop severe extrapyramidal reactions. ⸻ Severe orthostatic hypotension ❌ Classic feature of: ➡️ Multiple System Atrophy (MSA) Because of autonomic failure.

Answer 69

✅ Correct answer Alzheimer’s disease ⸻ Explanation Alzheimer’s disease (AD) is the most common cause of dementia worldwide and in the UK, accounting for roughly: ➡️ 60–70% of dementia cases

Answer 70

✅ Correct answer Clouding of consciousness ⸻ Why this is the correct answer The core diagnostic feature of delirium is: Disturbance of consciousness and attention In older psychiatry terminology this is called: “Clouding of consciousness.” This means: • reduced awareness of the environment • impaired attention • fluctuating alertness • difficulty sustaining conversation or focus This is what differentiates delirium from dementia and psychosis.

Answer 71

✅ Correct answer 1 mg BD (2 mg/day total) ⸻ Explanation For short-term treatment of persistent aggression in Alzheimer’s dementia, risperidone is the only antipsychotic licensed in the UK. According to BNF / NICE / Maudsley: • Start: 0.25–0.5 mg BD • Titrate carefully • Maximum licensed dose: 1 mg BD • Maximum duration: 6 weeks The low dose is due to the increased risk of stroke and mortality in elderly dementia patients receiving antipsychotics. ⸻ Why your answer (500 mcg BD) was wrong 500 micrograms BD = optimal/typical dose But the question asks for: Maximum licensed dose So the correct answer is 1 mg BD. ⸻ High-yield MRCPsych facts (very testable) • Risperidone is the only antipsychotic licensed in the UK for behavioural disturbance in dementia. • Maximum licensed dose: ➡ 1 mg BD • Maximum duration: ➡ 6 weeks • Must be used only if non-pharmacological measures fail. • Major risks: • Stroke • Increased mortality • Falls / sedation

Answer 72

✅ Correct answer None are recommended ⸻ Explanation In mild cognitive impairment (MCI) there is currently no medication recommended to prevent progression to dementia. According to NICE guidelines: • Cholinesterase inhibitors (donepezil, rivastigmine, galantamine) are not recommended for MCI. • Memantine is not recommended. • No pharmacological agent has been proven to prevent conversion to dementia. Management focuses on: • monitoring progression • treating reversible causes • lifestyle interventions (exercise, cardiovascular risk control).

Answer 73

✅ Correct answer Social isolation Paraphrenia is a late-onset psychotic disorder that typically occurs in older adults, usually after age 60. The term paraphrenia describes a late onset schizophrenic type presentation that is functional (not due to underlying organic illness). Paraphrenia typically presents in late adulthood, (after the age of 60), and is characterised by paranoid delusions, hallucinations (often auditory), and preserved cognitive function. The following facts about paraphrenia come up in the exams. - It is much more common in women than men - It is associated with hearing and visual impairment - Paraphrenic patients are less likely to be married - Paraphrenia patients are less likely to have children - It is associated with imaging changes consistent with CVAs - It is associated with social isolation

Answer 74

✅ Correct answer Behavioural variant is the most common subtype of frontotemporal lobar degeneration ⸻ Explanation Frontotemporal lobar degeneration (FTLD) refers to a group of neurodegenerative disorders affecting the frontal and temporal lobes. The major clinical subtypes are: 1️⃣ Behavioural variant FTD (bvFTD) 2️⃣ Primary progressive aphasia (PPA) • semantic variant (svPPA) • non-fluent/agrammatic variant (nfvPPA) The behavioural variant (bvFTD) accounts for roughly 50–60% of FTLD cases, making it the most common subtype. Typical early features include: • personality change • disinhibition • apathy • loss of empathy • compulsive behaviours • hyperorality

Answer 75

✅ Correct answer Alzheimer’s disease ⸻ Explanation Alzheimer’s disease presents with: • episodic memory impairment (early feature) • visuospatial dysfunction (e.g. failing pentagon copying) • executive dysfunction later in the disease The MMSE pentagon copying test assesses visuospatial ability, which becomes impaired in Alzheimer’s.

Answer 76

✅ Correct answer B. Stepwise deterioration ⸻ Explanation Vascular dementia results from repeated cerebrovascular events. Each vascular insult causes: ➡ sudden deterioration → plateau → another drop This produces the classic stepwise decline. ⸻ Why other options are wrong A. Gradual steady decline → Alzheimer’s disease C. Rapid progressive decline → prion disease / delirium D. Fluctuating cognition + hallucinations → Lewy body dementia E. Reversible impairment → delirium / depression ⸻ High-yield facts • Vascular dementia = second most common dementia • Risk factors: HTN, diabetes, smoking, stroke • Often focal neurological signs • Imaging → infarcts / white matter disease • Pattern → stepwise decline

Answer 77

✅ Correct answer B. Binswanger’s disease ⸻ Explanation Binswanger’s disease is a subcortical vascular dementia caused by chronic hypertension and small-vessel disease. It leads to: • white matter ischemia • multiple infarcts • subcortical cognitive impairment MRI typically shows diffuse white matter changes and infarcts. ⸻ Why other options are wrong A. Alzheimer’s disease → hippocampal atrophy, not infarcts. C. Normal pressure hydrocephalus → triad: • gait disturbance • urinary incontinence • dementia MRI shows ventriculomegaly, not infarcts. ⸻ High-yield facts • Binswanger = subcortical vascular dementia • Strongly associated with chronic hypertension • MRI → white matter lesions • Symptoms: executive dysfunction, slow processing, gait disturbance • Often occurs with small vessel disease

Answer 78

✅ Correct answer B. Visual hallucinations and fluctuating cognition ⸻ Explanation Dementia with Lewy bodies is characterised by core clinical features defined in the 2017 DLB consensus criteria: 1. Fluctuating cognition with pronounced variations in attention and alertness 2. Recurrent well-formed visual hallucinations 3. Spontaneous parkinsonism 4. REM sleep behaviour disorder Among these, visual hallucinations and cognitive fluctuations are the most classic clinical features. Hallucinations are typically: • well-formed • recurrent • often involve people or animals Memory impairment tends to occur later compared with Alzheimer’s disease. ⸻ Why the other options are wrong A. Early memory loss More typical of Alzheimer’s disease, where episodic memory impairment is the earliest feature. C. Aphasia Suggests primary progressive aphasia or frontotemporal dementia. D. Personality changes Strongly associated with behavioural variant frontotemporal dementia. E. Seizures Not a typical early feature of DLB. More commonly associated with advanced Alzheimer’s disease. ⸻ High-yield facts • DLB is the second most common degenerative dementia after Alzheimer’s disease • Hallucinations occur early and are well-formed • Fluctuating cognition is highly characteristic • Severe sensitivity to antipsychotics is common • REM sleep behaviour disorder may precede dementia by years • Dopamine transporter imaging (DAT scan) often shows reduced uptake

Answer 79

✅ Correct answer B. Fluctuating cognition ⸻ Explanation According to the 2017 DLB diagnostic criteria, the core clinical features are: 1. Fluctuating cognition 2. Recurrent visual hallucinations 3. REM sleep behaviour disorder 4. Spontaneous parkinsonism Diagnosis: • Probable DLB → dementia + two or more core features • Possible DLB → dementia + one core feature Fluctuating cognition is therefore a key diagnostic feature. ⸻ Why the other options are wrong A. Severe autonomic dysfunction More typical of Multiple System Atrophy (MSA). C. Depression Common in many dementias but not a diagnostic feature. D. Urinary incontinence More characteristic of normal pressure hydrocephalus. E. Sleep apnea Not related to DLB diagnostic criteria. ⸻ High-yield facts • Core features: fluctuations, hallucinations, parkinsonism, REM sleep disorder • Antipsychotic sensitivity is very common • DAT scan may show reduced dopamine uptake • Cognitive impairment often affects attention and visuospatial function early • Memory impairment is less prominent early than in Alzheimer’s

Answer 80

✅ Correct answer C. Lewy body dementia ⸻ Explanation This vignette describes the classic clinical triad of DLB: 1. Dementia 2. Visual hallucinations 3. Parkinsonism EEG findings may show diffuse slowing, which is common in DLB and can help differentiate it from Alzheimer’s disease. ⸻ Why the other options are wrong A. Alzheimer’s disease Hallucinations occur late, and parkinsonism is uncommon early. B. Frontotemporal dementia Usually presents with behavioural change or language impairment. D. Vascular dementia Typically shows stepwise deterioration and focal neurological signs. E. Creutzfeldt-Jakob disease Presents with rapidly progressive dementia, myoclonus, and characteristic periodic sharp waves on EEG. ⸻ High-yield facts • DLB = second most common degenerative dementia • Hallucinations often occur early in the disease • Parkinsonism within 1 year of dementia suggests DLB • Severe neuroleptic sensitivity • EEG often shows generalised slowing

Answer 81

✅ Correct Answer A. Lewy body dementia ⸻ Explanation Sleep disturbance is very characteristic of Dementia with Lewy Bodies (DLB) because of REM Sleep Behaviour Disorder (RBD). In RBD, patients lose the normal muscle paralysis during REM sleep, so they: • act out dreams • shout • punch or kick • fall out of bed This occurs because alpha-synuclein pathology affects brainstem REM sleep circuits. RBD may occur years before cognitive symptoms, making it an important prodromal marker of Lewy body disease. ⸻ Why the other options are wrong B. Frontotemporal dementia Sleep disturbance can occur but REM behaviour disorder is not typical. C. Alzheimer’s disease Sleep fragmentation and sundowning occur, but RBD is uncommon. D. Vascular dementia Sleep disturbance depends on lesion location; not a defining feature. E. Mixed dementia Features depend on the components involved. ⸻ High-yield MRCPsych facts • REM sleep behaviour disorder is a core feature of DLB (2017 criteria). • RBD often appears 10–15 years before dementia. • DLB patients frequently have daytime sleepiness. • Sleep disturbance is linked to brainstem Lewy body pathology. • RBD is also associated with Parkinson’s disease and Multiple System Atrophy.

Answer 82

✅ Correct Answer C. Lewy body dementia ⸻ Explanation Lewy body dementia characteristically affects: • Attention • Executive function • Visuospatial ability These deficits occur earlier and more prominently than in Alzheimer’s disease. This is why patients with DLB often have difficulty with: • drawing tasks • navigation • visuospatial tasks • complex attention tests ⸻ Why the other options are wrong A. Alzheimer’s disease Early deficit is episodic memory, not attention. B. Vascular dementia Executive dysfunction occurs but visuospatial deficits are less typical. D. Frontotemporal dementia Primarily behavioural or language changes. E. Creutzfeldt-Jakob disease Rapid cognitive decline with myoclonus and ataxia. ⸻ High-yield MRCPsych facts • Visuospatial impairment early → suggests DLB. • Memory may be relatively preserved early in DLB. • Cognitive fluctuations are characteristic. • Hallucinations occur early in DLB. • Attention deficits contribute to episodes resembling delirium.

Answer 83

✅ Correct Answer D. Dementia with Lewy bodies High-yield MRCPsych facts • DLB and Parkinson’s disease dementia are both synucleinopathies. • The 1-year rule distinguishes them clinically. • Hallucinations occur earlier in DLB than in PDD. • DLB patients have severe antipsychotic sensitivity. • Both disorders involve alpha-synuclein deposition.

Answer 84

✅ Correct Answer B. Parkinson’s disease dementia ⸻ Explanation The key concept being tested here is the “1-year rule” that differentiates: • Dementia with Lewy Bodies (DLB) • Parkinson’s Disease Dementia (PDD) Selegiline is a MAO-B inhibitor used to treat Parkinson’s disease, indicating the patient had parkinsonian motor symptoms for several years before cognitive decline. The scenario states: • Parkinson’s treatment for 3 years • Dementia for 1 year This means motor symptoms preceded dementia by more than 12 months, which fits the diagnostic criteria for Parkinson’s Disease Dementia. If dementia had appeared before or within 1 year of motor symptoms, the diagnosis would instead be Dementia with Lewy Bodies. • Parkinson’s disease dementia occurs in up to 80% of patients with PD over time • Both DLB and PDD are alpha-synucleinopathies • Cognitive deficits mainly affect executive function, attention, and visuospatial ability • Hallucinations can occur, often worsened by dopaminergic medication • The 1-year rule is the key exam distinction between DLB and PDD

Answer 85

✅ Correct Answer C. Alpha-synuclein ⸻ Explanation Lewy body dementia belongs to a group of disorders called synucleinopathies, which are characterised by abnormal accumulation of alpha-synuclein protein in neurons. These abnormal aggregates form Lewy bodies, the pathological hallmark of: • Dementia with Lewy bodies • Parkinson’s disease • Parkinson’s disease dementia The SNCA gene on chromosome 4 encodes alpha-synuclein, and mutations or abnormal aggregation of this protein contribute to the pathology. ⸻ Why the other options are wrong A. APOE ε4 Strongly associated with Alzheimer’s disease risk, but not specifically Lewy body dementia. ⸻ B. Progranulin Associated with frontotemporal dementia (FTD). ⸻ D. Presenilin-1 Mutation associated with familial early-onset Alzheimer’s disease. ⸻ E. Huntingtin Mutation causes Huntington’s disease, a trinucleotide repeat disorder. ⸻ High-yield MRCPsych facts • Lewy bodies contain aggregated alpha-synuclein • Alpha-synuclein pathology spreads through brainstem → limbic system → cortex • Lewy body diseases are collectively called synucleinopathies • DLB often coexists with Alzheimer’s pathology • Genetic mutations in SNCA increase risk of Parkinson’s disease and DLB

Answer 86

Answer → NOTCH3 (CADASIL)

Answer 87

Alzheimer’s disease Most commonly tested genes: • APOE ε4 → risk factor • APP • Presenilin-1 • Presenilin-2 Key exam point: Presenilin-1 = most common cause of familial early-onset Alzheimer’s ⸻ Lewy body dementia / Parkinson’s dementia Gene: SNCA (alpha-synuclein) Pathology: Lewy bodies Diseases in this group: • Parkinson’s disease • Parkinson’s disease dementia • Dementia with Lewy bodies • Multiple system atrophy These are called: Synucleinopathies ⸻ Frontotemporal dementia Genes most commonly tested: • MAPT (tau) • Progranulin (GRN) • C9orf72 Key exam point: C9orf72 mutation → FTD + ALS ⸻ Vascular dementia (genetic form) The classic exam syndrome: CADASIL Gene: NOTCH3 Clue in question: • young patient • migraine with aura • strokes • vascular dementia ⸻ Prion diseases Gene: PRNP Disease: Creutzfeldt-Jakob disease Clues: • rapidly progressive dementia • myoclonus • periodic sharp waves on EEG

Answer 88

✅ Correct Answer B. Non-fluent aphasia ⸻ Explanation Frontotemporal dementia (FTD) typically presents with language or behavioural changes, rather than memory impairment. There are two major clinical syndromes: 1️⃣ Behavioural variant FTD (bvFTD) Features include: • disinhibition • apathy • loss of empathy • socially inappropriate behaviour • compulsive behaviours • preference for sweet foods 2️⃣ Language variants (Primary Progressive Aphasia) These include: • Non-fluent/agrammatic aphasia • Semantic dementia • Logopenic aphasia The non-fluent aphasia variant is a common early presentation. ⸻ Why the other options are wrong A. Memory loss Early memory loss is typical of Alzheimer’s disease, not FTD. ⸻ C. Visuospatial problems More typical of Lewy body dementia or posterior cortical atrophy. ⸻ D. Hallucinations Hallucinations are a key feature of Dementia with Lewy bodies. ⸻ E. Seizures Not a typical early feature of FTD. ⸻ High-yield MRCPsych facts • FTD usually occurs before age 65. • Early symptoms are behavioural or language changes. • Memory may initially be preserved. • MRI often shows frontal and/or temporal lobe atrophy. • Pathology often involves tau or TDP-43 proteins.

Answer 89

✅ Correct Answer C. Pick’s disease ⸻ Explanation This vignette describes behavioural variant frontotemporal dementia (bvFTD). Classic features include: • disinhibition • socially inappropriate behaviour • apathy • loss of empathy • compulsive behaviours • preference for sweet foods Pick’s disease is the classic pathological subtype of FTD, characterised by: • Pick bodies • frontotemporal atrophy High-yield MRCPsych facts • Sweet food preference is a classic exam clue for FTD • Behavioural variant FTD often presents with social disinhibition • Onset often occurs between ages 45–65 • Imaging shows frontal and temporal lobe atrophy • Pathology includes tau or TDP-43 protein deposits

Answer 90

✅ Correct Answer C. Frontotemporal dementia ⸻ Explanation Behavioural variant FTD often causes: • disinhibition • socially inappropriate behaviour • poor judgement • sexual disinhibition Because the frontal lobes regulate social behaviour, degeneration in these regions leads to loss of behavioural inhibition. Patients may exhibit: • rude comments • sexual disinhibition • impulsive behaviour • poor insight High-yield MRCPsych facts • Behavioural variant FTD causes disinhibition and socially inappropriate behaviour • Patients often have loss of empathy • Compulsive or repetitive behaviours may occur • Hyperorality and sweet food preference are common • MRI shows frontal lobe atrophy

Answer 91

✅ Correct Answer B. Progranulin ⸻ Explanation Frontotemporal dementia (FTD) has several genetic causes, but one of the most important genes associated with familial FTD is the Progranulin gene (GRN) on chromosome 17. Mutations in GRN lead to reduced progranulin protein, which contributes to TDP-43 protein accumulation and neurodegeneration in the frontal and temporal lobes. Another very important genetic cause of FTD is: • C9orf72 repeat expansion This mutation is also associated with amyotrophic lateral sclerosis (ALS). ⸻ Why the other options are wrong A. APOE ε4 Strongly associated with Alzheimer’s disease, especially late-onset sporadic AD. ⸻ C. Alpha-synuclein Associated with Lewy body diseases, including: • Parkinson’s disease • Dementia with Lewy bodies • Parkinson’s disease dementia ⸻ D. Presenilin-1 The most common cause of familial early-onset Alzheimer’s disease. ⸻ E. APP (amyloid precursor protein) Also linked to familial Alzheimer’s disease. ⸻ High-yield MRCPsych facts • FTD often presents before age 65. • Important genes: Progranulin, MAPT, C9orf72. • C9orf72 mutation links FTD with ALS. • Pathology often involves tau or TDP-43 proteins. • Imaging shows frontal and temporal lobe atrophy.

Answer 92

✅ Correct Answer B. Non-fluent dysphasia ⸻ Explanation One of the language variants of frontotemporal dementia is Primary Progressive Aphasia (PPA). The non-fluent / agrammatic variant is characterised by: • Effortful speech • grammatical errors • short, halting sentences • word-finding difficulty Speech becomes slow and laboured, but comprehension may remain relatively preserved initially. ⸻ Why the other options are wrong A. Fluent aphasia More typical of semantic dementia, another FTD variant, where speech is fluent but lacks meaning. ⸻ C. Conduction aphasia Caused by lesions of the arcuate fasciculus (stroke). ⸻ D. Anomic aphasia Characterised mainly by word-finding difficulty, not the progressive speech effort seen in FTD. ⸻ E. Global aphasia Occurs in large left hemisphere strokes, not neurodegenerative disease. ⸻ High-yield MRCPsych facts • Language variants of FTD are called Primary Progressive Aphasias (PPA). • Non-fluent PPA causes effortful speech. • Semantic dementia causes fluent but empty speech. • Behavioural FTD causes personality changes. • MRI shows left frontal/temporal atrophy.

Answer 93

✅ Correct Answer C. Alcohol-related dementia ⸻ Explanation Alcohol-related dementia (ARD) results from chronic alcohol misuse and may improve with: • alcohol abstinence • thiamine supplementation • nutritional rehabilitation Unlike degenerative dementias, ARD may show partial cognitive recovery, especially if identified early. ARD overlaps with Wernicke-Korsakoff syndrome, which results from thiamine deficiency. ⸻ Why the other options are wrong A. Alzheimer’s disease A progressive neurodegenerative disorder, not reversible. ⸻ B. Vascular dementia Damage from strokes is permanent, although risk factor control may slow progression. ⸻ D. Frontotemporal dementia Progressive degeneration of frontal and temporal lobes. ⸻ E. Lewy body dementia Another progressive neurodegenerative disease. ⸻ High-yield MRCPsych facts • Alcohol-related dementia is associated with thiamine deficiency. • Chronic alcohol misuse causes frontal lobe damage. • Abstinence may lead to partial cognitive improvement. • Wernicke’s triad: confusion, ataxia, ophthalmoplegia. • Korsakoff syndrome causes severe memory impairment with confabulation.

Answer 94

✅ Correct Answer B. Normal pressure hydrocephalus ⸻ Explanation This question describes the classic triad of Normal Pressure Hydrocephalus (NPH): 1️⃣ Gait disturbance (usually first symptom) 2️⃣ Urinary incontinence 3️⃣ Cognitive impairment This triad is commonly remembered as: “Wet, Wobbly, and Wacky.” • Wet → urinary incontinence • Wobbly → gait disturbance • Wacky → cognitive decline The gait is typically: • broad-based • slow • magnetic/shuffling Neuroimaging shows: • ventriculomegaly (enlarged ventricles) Importantly, CSF pressure is usually normal, which gives the condition its name. High-yield MRCPsych facts • Gait disturbance is usually the earliest symptom of NPH • CT/MRI shows ventricular enlargement without cortical atrophy • NPH is one of the potentially reversible causes of dementia • Treatment is ventriculoperitoneal shunt • Symptoms may improve after CSF drainage tests

Answer 95

✅ Correct Answer C. Chronic subdural hematoma ⸻ Explanation Chronic subdural hematoma commonly occurs in older adults, even after minor or unnoticed head trauma. Risk factors include: • brain atrophy in elderly patients • anticoagulant use • falls The bleeding develops slowly over weeks, leading to symptoms such as: • fluctuating cognitive impairment • confusion • headache • drowsiness • personality changes Because symptoms develop gradually, chronic subdural hematoma can mimic dementia. ⸻ Why the other options are wrong A. Ischemic stroke Usually presents with sudden focal neurological deficits. ⸻ B. Intracerebral hemorrhage Typically presents with acute neurological deterioration, not gradual symptoms. ⸻ D. Meningitis Would present with: • fever • neck stiffness • photophobia ⸻ E. Alzheimer’s disease Alzheimer’s causes gradual progressive memory loss, not headaches and fluctuating drowsiness. ⸻ High-yield MRCPsych facts • Chronic subdural hematoma can mimic dementia • Symptoms may develop weeks to months after trauma • CT scan typically shows crescent-shaped hematoma • Treatment is surgical drainage • Always consider this diagnosis in elderly patients with new cognitive decline

Answer 96

✅ Correct Answer E. All of the above ⸻ Explanation This question is testing your knowledge of reversible (or partially reversible) causes of cognitive impairment, which is a core MRCPsych topic. All listed categories include causes that can mimic dementia but are treatable, such as: ⸻ 🧠 Intracranial causes • Normal pressure hydrocephalus • Chronic subdural hematoma • Brain tumours ⸻ 🧠 Psychiatric causes • Depression (pseudodementia) • Severe anxiety ⸻ 🧠 Infections • Delirium (UTI, pneumonia) • HIV • Neurosyphilis • HSV encephalitis ⸻ 🧠 Metabolic causes • Hypoglycaemia • Uraemia • Electrolyte imbalance ⸻ 🧠 Endocrine • Hypothyroidism • Hypercalcaemia ⸻ 🧠 Vitamin deficiencies • Vitamin B12 deficiency • Folate deficiency • Thiamine deficiency (Wernicke’s) ⸻ 🧠 Drugs/toxins • Benzodiazepines • Anticholinergics • Alcohol • Opioids High-yield MRCPsych facts • Always exclude reversible causes before diagnosing dementia • Depression can mimic dementia (pseudodementia) • B12 deficiency is a classic exam favourite • NPH and subdural hematoma are surgically treatable • Medications (especially anticholinergics) commonly cause cognitive impairment

Answer 97

✅ Correct Answer D. Collateral history from spouse about daily functioning ⸻ Explanation The key difference between MCI and dementia is: 👉 Functional impairment The most sensitive way to detect functional decline is: ➡️ Collateral history from a reliable informant Patients often: • lack insight • underreport symptoms So a spouse/family member gives more accurate functional assessment. ⸻ Why the other options are wrong A. MMSE Measures cognition but does NOT assess function well. ⸻ B. Clock drawing test Tests visuospatial ability, not function. ⸻ C. Patient’s functional history Less reliable due to poor insight. ⸻ E. Neuropsychological testing Useful but still less practical than real-life functional assessment. ⸻ High-yield MRCPsych facts • Diagnosis of dementia requires functional decline • MCI = no impairment in ADLs • Collateral history is essential in cognitive assessment • Patients often lack insight (anosognosia) • Functional decline is the key discriminator

Answer 98

✅ Correct Answer B. Mild cognitive impairment ⸻ Explanation The MoCA (Montreal Cognitive Assessment) is more sensitive than MMSE because it tests: • executive function • attention • visuospatial skills These domains are affected early in MCI, but poorly assessed by MMSE. MMSE has a: • ceiling effect • may miss subtle early deficits MoCA was specifically designed to detect MCI. ⸻ Why the other options are wrong A. Severe dementia MMSE is actually good at detecting severe impairment. ⸻ C. Delirium Neither MMSE nor MoCA is ideal → 4AT or CAM preferred. ⸻ D. Intellectual disability Requires developmental assessment, not MMSE/MoCA. ⸻ E. Psychiatric disorders Cognitive tests are not diagnostic tools for psychiatric illness. ⸻ High-yield MRCPsych facts • MoCA > MMSE for MCI detection • MoCA cutoff = 26/30 • MMSE has poor sensitivity for early dementia • MoCA includes executive function tasks • MMSE is still widely used but less sensitive

Answer 99

✅ Correct Answer A. RUDAS ⸻ Explanation The Rowland Universal Dementia Assessment Scale (RUDAS) is specifically designed for: • culturally diverse populations • non-English speakers • patients with low educational levels It minimizes: • language bias • cultural bias • educational bias This makes it the best screening tool in this scenario. ⸻ Why the other options are wrong B. MMSE Highly affected by: • language • education → can underestimate cognition in non-English speakers. ⸻ C. MoCA More sensitive than MMSE, but still education and language dependent. ⸻ D. ACE-III Very detailed but language-heavy → not suitable here. ⸻ E. Clock drawing Useful screening tool, but not sufficient alone. ⸻ High-yield MRCPsych facts • RUDAS = best for multicultural / low education patients • MMSE has strong educational bias • MoCA is better for MCI but still biased • Always consider language and education when interpreting scores • Use interpreters, but tool selection still matters

Answer 100

✅ Correct Answer B. CAMDEX ⸻ Explanation CAMDEX (Cambridge Examination for Mental Disorders of the Elderly) is a: 👉 Comprehensive cognitive assessment tool It includes: • detailed cognitive testing • psychiatric assessment • informant interview • functional assessment It is specifically designed for: ➡️ diagnosis and monitoring of dementia in older adults ⸻ Why the other options are wrong A. MMSE Brief screening tool → not comprehensive ⸻ C. MoCA Sensitive for MCI, but still screening, not full assessment ⸻ D. Clock drawing Only assesses visuospatial function ⸻ E. AD8 Informant-based screening → not comprehensive ⸻ High-yield MRCPsych facts • CAMDEX includes CAMCOG (cognitive section) • Used for full dementia assessment • Includes informant + clinical + cognitive evaluation • More detailed than MMSE/MoCA • Useful for diagnosis and follow-up

Answer 101

✅ Correct Answer B. <10 ⸻ Explanation MMSE severity classification: Normal ≥26 Mild dementia 21–25 Moderate dementia 10–20 Severe dementia <10 High-yield MRCPsych facts • MMSE <10 = severe dementia • MMSE has ceiling effect (misses early disease) • Influenced by education and language • MoCA is better for early detection (MCI) • Always interpret scores in clinical context

Answer 102

✅ Correct Answer C. Visuospatial and executive function ⸻ Explanation The clock drawing test (CDT) is a quick bedside screening tool that primarily assesses: 🧠 Visuospatial function • ability to understand spatial relationships • correct placement of numbers • orientation of clock hands 🧠 Executive function • planning (draw circle → numbers → hands) • sequencing • organisation It also indirectly involves: • attention • working memory • motor execution But the core domains tested = visuospatial + executive High-yield MRCPsych facts • CDT is sensitive to parietal lobe dysfunction • Also reflects frontal (executive) dysfunction • Useful in dementia screening and delirium • Errors can suggest type of cognitive deficit • Often used alongside MMSE or MoCA

Answer 103

✅ Correct Answer C. Mild cognitive impairment ⸻ Explanation This question tests the key distinction between MCI and dementia: 👉 Function ⸻ ACE-III score interpretation • Normal cutoff ≈ 88–82 (varies with population) • Score 87/100 = borderline / mildly reduced cognition ⸻ Clinical reasoning • There is objective cognitive impairment (ACE-III ↓) • BUT the patient is functioning independently ➡️ This fits: 👉 Mild Cognitive Impairment (MCI) High-yield MRCPsych facts • MCI = cognitive decline without functional impairment • ACE-III is more detailed than MMSE • ACE-III normal cutoff ≈ 88+ • Patients with MCI are at increased risk of dementia • Functional history is key to diagnosis

Answer 104

✅ Correct Answer A. Apathy ⸻ 🧠 Explanation Apathy is the most common BPSD symptom in Alzheimer’s disease. It is characterised by: • Reduced motivation • Reduced initiative • Emotional blunting It is important to distinguish from depression: • Apathy → lack of motivation • Depression → low mood + guilt + sadness Neurobiologically, apathy is linked to frontal-subcortical circuit dysfunction, particularly involving: • anterior cingulate cortex • prefrontal cortex ⸻ ❌ Why the other options are wrong B. Aggression • Common but not the most frequent • Usually appears later ⸻ C. Irritability • Common but less prevalent than apathy ⸻ D. Aberrant motor behaviour • e.g. wandering • Occurs in moderate–severe stages ⸻ E. Disinhibition • More typical of frontotemporal dementia (FTD) ⸻ 🔥 High-yield facts • Apathy = most common BPSD symptom • Depression = second most common • Apathy ≠ depression (no sadness) • Strongly linked to functional decline • Seen in Alzheimer’s + vascular dementia

Answer 105

✅ Correct Answer B. Worsening symptoms in evening/night ⸻ 🧠 Explanation Sundowning refers to worsening confusion, agitation, and behavioural disturbance in the late afternoon/evening. ⸻ Mechanisms: • Circadian rhythm disruption • Reduced environmental cues (light) • Fatigue • Sensory deprivation ⸻ Clinical features: • Increased confusion • Agitation • Wandering • Hallucinations (sometimes) ⸻ ❌ Why the other options are wrong A. Early morning confusion • Opposite pattern ⸻ C. Light sensitivity • Not part of definition ⸻ D. Sleep disorders only • Sundowning includes behavioural symptoms, not just sleep ⸻ E. Appetite changes • Not specific ⸻ 🔥 High-yield facts • Sundowning = evening worsening • Seen in moderate–severe dementia • Managed with: • good lighting • structured routine • reducing evening stimulation • Avoid sedatives if possible

Answer 106

✅ Correct Answer B. Belief that a familiar person is replaced by an impostor ⸻ 🧠 Explanation Capgras syndrome is a delusional misidentification syndrome where the patient believes that a familiar person has been replaced by an identical impostor. ⸻ Pathophysiology: • Disconnection between: • facial recognition pathways • emotional familiarity circuits → Patient recognises the face but lacks emotional recognition ⸻ Associations: • Dementia (especially Lewy body dementia) • Schizophrenia • Brain injury ⸻ ❌ Why the other options are wrong A. Limb doesn’t belong → Alien limb phenomenon (corticobasal degeneration) ⸻ C. Strangers are familiar → Fregoli delusion ⸻ D. Belief one is dead → Cotard syndrome ⸻ E. Places duplicated → Reduplicative paramnesia ⸻ 🔥 High-yield facts • Capgras = impostor delusion • Common in Lewy body dementia • Associated with violence risk ⚠️ • Part of delusional misidentification syndromes • Important differential from hallucinations

Answer 107

✅ Correct Answer C. Reassurance ⸻ 🧠 Explanation If hallucinations are: • Non-distressing • Not causing risk → DO NOT treat pharmacologically ⸻ Key principle: 👉 Treat distress and risk, not just symptoms ⸻ Why? • Antipsychotics in dementia → ↑ stroke + mortality risk • Especially dangerous in Lewy body dementia (severe sensitivity) ⸻ ❌ Why the other options are wrong A & B (Risperidone / Haloperidol) → Only if: • Severe distress • Risk to self/others ⸻ D. Rivastigmine → Used in: • Lewy body dementia / Parkinson’s dementia → Not first-line for isolated mild hallucinations ⸻ E. Increase antipsychotic dose → Dangerous and inappropriate ⸻ 🔥 High-yield facts • Non-distressing hallucinations → reassurance ONLY • Antipsychotics = last resort in dementia • LBD → extreme antipsychotic sensitivity ⚠️ • Always assess risk + distress • Use non-pharmacological approaches first

Answer 108

✅ Correct Answer B. Risperidone ⸻ 🧠 Explanation Risperidone is: • The only antipsychotic licensed in the UK for 👉 persistent aggression in Alzheimer’s dementia ⸻ Indications: • Severe aggression • Risk to patient or others • Failure of non-drug measures ⸻ Important: • Use lowest dose, shortest duration • Monitor closely ⸻ ❌ Why the other options are wrong A. Haloperidol → Higher risk of: • Extrapyramidal symptoms • Stroke → Not preferred ⸻ C. Lorazepam → Causes: • Falls • Confusion • Paradoxical agitation ⸻ D. Increase cholinesterase inhibitor → Not effective for acute aggression ⸻ E. Valproate → Not recommended for BPSD (poor evidence + side effects) ⸻ 🔥 High-yield facts • Risperidone = ONLY licensed drug for BPSD aggression (UK) • Max licensed: 1 mg BD • ↑ risk of: • stroke • mortality ⚠️ • Always try non-pharmacological first • Review regularly (≤6 weeks typically)

Answer 109

✅ Correct Answer A. Avoid psychotropic drugs if possible ⸻ 🧠 Explanation This is a VERY classic exam trap. 👉 Key issue = ACUTE STROKE + DEMENTIA + AGITATION ⸻ Core principle: ⚠️ Antipsychotics significantly increase cerebrovascular risk → Especially in: • Elderly • Dementia • Recent stroke ⸻ Therefore: 👉 In acute infarct → AVOID psychotropics if possible • Prioritise: • Environmental modification • Reorientation • Treat underlying causes ⸻ If absolutely necessary: • Risperidone is the least-worst option BUT: 👉 NOT first-line in acute stroke setting ⸻ ❌ Why the other options are wrong B. Haloperidol → High EPS + ↑ stroke risk → worse choice ⸻ C. Risperidone → Licensed for BPSD ❌ BUT contraindicated / high risk in acute stroke ⸻ D. Benzodiazepines → Cause: • Falls • Delirium • Paradoxical agitation ⸻ E. Olanzapine → Not first-line + metabolic + stroke risk ⸻ 🔥 High-yield facts • Antipsychotics in dementia → ↑ stroke + mortality • Risk is highest in first weeks • Acute stroke = strong reason to avoid • Always try non-pharmacological first • If forced → lowest dose, shortest duration

Answer 110

✅ Correct Answer C. 1% ⸻ 🧠 Explanation Antipsychotics in dementia: • Increase stroke risk by 2–3 fold • Absolute risk ≈ 1% in first 6–12 weeks ⸻ Why important? This led to: 👉 Black box warnings (FDA/BNF) ⸻ Mechanism (exam-level understanding): • Increased platelet aggregation • Hypotension → cerebral hypoperfusion • Arrhythmias ⸻ ❌ Why others are wrong • 0.1 / 0.5% → too low • 3–5% → too high ⸻ 🔥 High-yield facts • Absolute risk ≈ 1% • Relative risk ↑ 2–3× • Highest risk = early weeks • Applies to both typical + atypical antipsychotics • Key exam phrase: “black box warning”

Answer 111

✅ Correct Answer C. Review and consider stopping risperidone ⸻ 🧠 Explanation Antipsychotics in dementia: 👉 Must be: • Short-term • Regularly reviewed ⸻ Key rule: ⏳ Review every 6–12 weeks If: • No benefit → STOP ⸻ Why? • Significant risks: • Stroke • Death • Falls • Cognitive worsening ⸻ ❌ Why others are wrong A. Continue indefinitely → ❌ Unsafe + against guidelines ⸻ B. Increase dose → ❌ Increases harm without benefit ⸻ D. Add haloperidol → ❌ Polypharmacy + high risk ⸻ E. Benzodiazepine → ❌ Worsens confusion ⸻ 🔥 High-yield facts • Review antipsychotics every 6–12 weeks • Stop if: • No benefit • Symptoms resolved • Use lowest dose, shortest duration • Always reassess risk vs benefit • Non-drug approaches remain first-line

Answer 112

✅ Correct Answer B. Reversible cholinesterase inhibitor ⸻ 🧠 Explanation Donepezil is a centrally acting, reversible acetylcholinesterase inhibitor. 👉 It increases acetylcholine availability in synapses → compensates for cholinergic neuron loss in Alzheimer’s disease ⸻ Why important? Alzheimer’s = 🧠 ↓ Acetylcholine (basal forebrain degeneration) ⸻ ❌ Why the other options are wrong A. NMDA receptor antagonist → That’s memantine ⸻ C. Irreversible cholinesterase inhibitor → Not used clinically in dementia ⸻ D. Dopamine agonist → Parkinson’s drugs (e.g., ropinirole) ⸻ E. GABA enhancer → Benzodiazepines ⸻ 🔥 High-yield facts • Donepezil = reversible AChE inhibitor • Used in mild–moderate Alzheimer’s • Others in class: • Rivastigmine • Galantamine • SEs = GI upset, bradycardia, syncope • Avoid in heart block

Answer 113

✅ Correct Answer B. Moderate–severe Alzheimer’s disease ⸻ 🧠 Explanation Memantine is an NMDA receptor antagonist. 👉 It reduces: • Glutamate-mediated excitotoxicity → protects neurons ⸻ Indication: • Moderate–severe Alzheimer’s disease • Can be used: • Alone • Or with donepezil (augmentation) ⸻ ❌ Why the other options are wrong A. Mild Alzheimer’s → Use cholinesterase inhibitors ⸻ C. Mild cognitive impairment → No pharmacological treatment recommended ⸻ D. Vascular dementia only → Not standard ⸻ E. All dementias → Incorrect — indication is specific ⸻ 🔥 High-yield facts • Memantine = NMDA antagonist • Use in moderate–severe AD • Can combine with donepezil • Helps with: • cognition • behaviour • Better tolerated than cholinesterase inhibitors

Answer 114

✅ Correct Answer C. Memantine ⸻ 🧠 Explanation 👉 If patient on donepezil (AChE inhibitor) still declining: → Add memantine (because it works via a different mechanism) ⸻ Key principle: ❌ Do NOT combine cholinesterase inhibitors ✔ Combine AChE inhibitor + NMDA antagonist ⸻ ❌ Why the other options are wrong A & B (Rivastigmine / Galantamine) → Same class → no added benefit ⸻ D. Tacrine → Obsolete (hepatotoxicity) ⸻ E. Haloperidol → Only for severe behavioural disturbance ⸻ 🔥 High-yield facts • Donepezil + memantine = standard combo • Do NOT combine multiple AChE inhibitors • Memantine works on glutamate pathway • Used when disease progresses • Exam phrase: “augmentation therapy”

Answer 115

✅ Correct Answer C. Rivastigmine ⸻ 🧠 Explanation In Dementia with Lewy Bodies (DLB): 👉 Non-cognitive symptoms include: • Visual hallucinations • Delusions • Agitation ⸻ First-line treatment: 👉 Cholinesterase inhibitors (especially rivastigmine) ⸻ Why? DLB has: 🧠 Severe cholinergic deficit (even more than Alzheimer’s) → Increasing acetylcholine: • Improves cognition • Reduces hallucinations • Improves behavioural symptoms ⸻ Key point: 👉 Rivastigmine has the strongest evidence in DLB ⸻ ❌ Why the other options are wrong A. Memantine → Less evidence for behavioural symptoms ⸻ B. Donepezil → Can be used ❗ BUT rivastigmine = more evidence ⸻ D. Haloperidol → 🚨 DANGEROUS in DLB → Severe sensitivity → rigidity, death ⸻ E. Lorazepam → Worsens confusion, falls ⸻ 🔥 High-yield facts • DLB = most sensitive to antipsychotics ⚠️ • Rivastigmine = best for hallucinations in DLB • Treat behaviour with AChE inhibitors first • Antipsychotics only if: • severe distress • use quetiapine/clozapine ONLY • Hallucinations often well-formed visual

Answer 116

✅ Correct Answer A. Rivastigmine ⸻ 🧠 Explanation This is Parkinson’s Disease Dementia (PDD). ⸻ First-line treatment: 👉 Rivastigmine ⸻ Why? • Only licensed drug for PDD • Strongest evidence • Improves: Attention Executive function ⸻ Key exam logic: 👉 Parkinson’s + cognitive decline → think RIVASTIGMINE ⸻ ❌ Why the other options are wrong B. Donepezil → Can be used, but not first-line ⸻ C. Memantine → Less evidence in PDD ⸻ D. Risperidone → Avoid (worsens parkinsonism) ⸻ E. Increase levodopa → May worsen cognition/hallucinations ⸻ 🔥 High-yield facts • Rivastigmine = first-line in PDD • Available as patch → ↓ GI side effects • Improves: • attention • executive dysfunction • Avoid dopamine blockers (antipsychotics) • Parkinson’s cognition ≠ Alzheimer’s pattern

Answer 117

✅ Correct Answer B. Rivastigmine ⸻ 🧠 Explanation This is a combo scenario: 👉 Parkinson’s + 👉 Psychosis + 👉 Cognitive impairment ⸻ Key rule: 👉 Treat cognition first → rivastigmine ⸻ Why? • Addresses: • Cognitive decline • Hallucinations • Safer than antipsychotics ⸻ When to use antipsychotics? 👉 ONLY if: • Severe psychosis • Dangerous Then: ✔ Quetiapine ✔ Clozapine ⸻ ❌ Why the other options are wrong A. Quetiapine → Used if psychosis severe → Not first-line if cognition also impaired ⸻ C. Haloperidol → 🚨 Contraindicated → worsens Parkinsonism ⸻ D. Risperidone → Same problem (dopamine blockade) ⸻ E. Clozapine → Effective but: • Reserved for severe cases • Requires monitoring ⸻ 🔥 High-yield facts • Parkinson’s + dementia → rivastigmine first-line • Antipsychotics worsen motor symptoms • Safe options: • Quetiapine • Clozapine • Always: 1. Reduce dopaminergic meds if possible 2. Add rivastigmine

Answer 118

✅ Correct Answer C. Discontinue antipsychotic and use non-pharmacological interventions ⸻ 🧠 Explanation This is classic DLB antipsychotic sensitivity reaction ⚠️ ⸻ What’s happening? DLB patients have: 👉 Extreme sensitivity to dopamine blockade → Leads to: • Severe parkinsonism • Reduced consciousness • Autonomic instability • NMS-like picture ⸻ Management principle: 🚨 STOP ANTIPSYCHOTIC IMMEDIATELY Then: • Supportive care • Non-drug strategies ⸻ Why so important? • Occurs in ~40–50% of DLB patients • Can be: • Severe • Irreversible • Fatal ⸻ ❌ Why the other options are wrong A / B / D (continue / increase / add) → 🚨 Dangerous → worsens reaction ⸻ E. Monitor → ❌ Not safe — this is a medical emergency ⸻ 🔥 High-yield facts • DLB = EXTREME antipsychotic sensitivity • Can mimic Neuroleptic Malignant Syndrome • Mortality ↑ 2–3 fold with antipsychotics • Always stop offending drug • Use non-pharmacological strategies first

Answer 119

✅ Correct Answer B. Antipsychotics may lead to irreversible parkinsonism ⸻ 🧠 Explanation DLB = dopamine-sensitive brain → Blocking dopamine → ⚠️ Severe and sometimes irreversible parkinsonism ⸻ Key risks: • Severe rigidity • Reduced consciousness • NMS-like syndrome • Death ⸻ ❌ Why the other options are wrong A. Safe → ❌ False (dangerous) C. Negligible mortality → ❌ ↑ mortality 2–3× D. First-line → ❌ NEVER E. Equal safety → ❌ Some safer (quetiapine/clozapine) ⸻ 🔥 High-yield facts • DLB = most antipsychotic-sensitive dementia • Risk of irreversible parkinsonism • ↑ mortality with antipsychotics • Avoid typical antipsychotics completely • Use only if absolutely necessary

Answer 120

✅ Correct Answer D. Quetiapine ⸻ 🧠 Explanation 👉 If antipsychotics are unavoidable in DLB: ✔ Use: • Quetiapine (first choice) • Clozapine (second-line, needs monitoring) ⸻ Why quetiapine? • Minimal dopamine blockade • Less risk of worsening parkinsonism ⸻ Key rule: 👉 Use lowest dose, extreme caution ⸻ ❌ Why the other options are wrong A. Haloperidol → 🚨 Contraindicated (severe reactions) ⸻ B. Risperidone → High D2 blockade → dangerous ⸻ C. Olanzapine → Still risky in DLB ⸻ E. Aripiprazole → Not preferred / insufficient evidence ⸻ 🔥 High-yield facts • First-line for hallucinations in DLB = rivastigmine • If antipsychotic needed: • Quetiapine first • Clozapine second • Avoid: • Haloperidol • Risperidone • Always weigh risk vs benefit

Answer 121

✅ Correct Answer D. Clonazepam ⸻ 🧠 Explanation This is describing: 👉 REM Sleep Behaviour Disorder (RBD) ⸻ Key features: • Loss of REM atonia • Dream enactment • Movements during sleep • Vivid dreams ⸻ First-line treatment: 👉 Clonazepam (low dose at night) ⸻ Why? • Enhances GABA • Suppresses abnormal motor activity during REM ⸻ ❌ Why the other options are wrong A. Risperidone → Worsens parkinsonism ⸻ B. Donepezil → Not for RBD ⸻ C. Memantine → No role ⸻ E. Levodopa → For motor symptoms, not RBD ⸻ 🔥 High-yield facts • RBD = core feature of LBD • May precede dementia by years • First-line: • Clonazepam • Melatonin (alternative) • Associated with synucleinopathies: • LBD • Parkinson’s • Risk of injury → important to treat

Answer 122

✅ Correct Answer B. Reduced psychomotor activity Hypoactive delirium: • Quiet • Withdrawn • Lethargic • Reduced movement ⸻ Key issue: 👉 Often MISSED because patient is “calm” ⸻ ❌ Why the other options are wrong A. Increased activity → Hyperactive delirium C. Normal activity → Not delirium D. Aggression → Hyperactive E. Wandering → Hyperactive ⸻ 🔥 High-yield facts • Hypoactive delirium = most underdiagnosed • Associated with worse prognosis ⚠️ • Patients may appear: • depressed • sleepy • Delirium hallmark = fluctuating consciousness • Always check: • attention • awareness

Answer 123

✅ Correct Answer: B. Haloperidol ⸻ 🧠 Explanation (Exam-focused) In delirium, first-line management is always: 👉 Non-pharmacological BUT if: • Severe agitation 🚨 • Risk to self/others • Distress interfering with care ➡️ Then low-dose antipsychotic is indicated 👉 Haloperidol = first-line (classic exam answer) Because: • Minimal anticholinergic effects (important in delirium) • Less sedating than others • Strong evidence base ⸻ ❌ Why others are wrong A. Benzodiazepines 🚫 NOT first-line • Can worsen delirium • Cause disinhibition + oversedation ✅ ONLY used in: • Alcohol withdrawal delirium (DTs) ⸻ C. Risperidone • Can be used • BUT not first-line in exams vs haloperidol ⸻ D. Olanzapine • Alternative option • More sedating + anticholinergic → worse for delirium ⸻ E. Promethazine • Anticholinergic → worsens confusion ⸻ 🔥 High-yield facts (Paper B gold) • Delirium = avoid anticholinergic + sedatives • First-line drug (if needed) = LOW-DOSE HALOPERIDOL • Start VERY low (e.g. 0.25–0.5 mg) • Always treat underlying cause (infection, meds, electrolytes) • Benzos ONLY for alcohol withdrawal delirium

Answer 124

✅ Correct Answer: B. Urinary tract infection ⸻ 🧠 Explanation Delirium is almost always secondary to an underlying medical cause. 👉 In elderly: • Infections (UTI, pneumonia) = MOST COMMON triggers Other common causes: • Electrolyte imbalance • Medications (anticholinergics, opioids) • Dehydration ⸻ ❌ Why others are wrong • A. Alzheimer’s → chronic, not acute • C. Schizophrenia → psychosis, not fluctuating attention • D/E → not causes of acute delirium ⸻ 🔥 High-yield facts • Delirium = acute + reversible cause • Always search for medical trigger • Infection = #1 cause in elderly • Think “PINCH ME” mnemonic

Answer 125

✅ Correct Answer: B. Urinary tract infection ⸻ 🧠 Explanation Delirium is almost always secondary to an underlying medical cause. 👉 In elderly: • Infections (UTI, pneumonia) = MOST COMMON triggers Other common causes: • Electrolyte imbalance • Medications (anticholinergics, opioids) • Dehydration ⸻ ❌ Why others are wrong • A. Alzheimer’s → chronic, not acute • C. Schizophrenia → psychosis, not fluctuating attention • D/E → not causes of acute delirium ⸻ 🔥 High-yield facts • Delirium = acute + reversible cause • Always search for medical trigger • Infection = #1 cause in elderly • Think “PINCH ME” mnemonic

Answer 126

✅ Correct Answer: C. Fluctuating level of consciousness ⸻ 🧠 Explanation 👉 The KEY distinguishing feature: ➡️ Delirium = impaired attention + fluctuating consciousness While: • Dementia = clear consciousness (until late) ⸻ ❌ Why others are wrong • Memory, disorientation → BOTH can have • Behaviour/language → nonspecific ⸻ 🔥 High-yield facts • Attention = most sensitive sign of delirium • Fluctuation = hallmark • Dementia = stable, progressive • Delirium = acute, fluctuating

Answer 127

Which neurotransmitter abnormality is most associated with delirium? A. Increased dopamine B. Decreased dopamine C. Increased serotonin D. Increased GABA E. Decreased glutamate ⸻ ✅ Correct Answer: A. Increased dopamine ⸻ 🧠 Explanation Delirium is associated with: 👉 ↑ Dopamine 👉 ↓ Acetylcholine This explains: • Why anticholinergics worsen delirium • Why antipsychotics (dopamine blockers) are used ⸻ ❌ Why other options are wrong • Dopamine is increased, not decreased • Serotonin/GABA not primary mechanisms ⸻ 🔥 High-yield facts • Delirium = dopamine excess + cholinergic deficiency • Anticholinergic drugs = common cause • Haloperidol works via dopamine blockade

Answer 128

✅ Correct Answer: C. Polypharmacy ⸻ 🧠 Explanation Delirium risk factors: 👉 Polypharmacy = MAJOR risk Especially: • Anticholinergics • Benzodiazepines • Opioids ⸻ ❌ Why others are wrong • Young age → protective • Good cognition → protective ⸻ 🔥 High-yield facts • Risk factors = • Age • Dementia • Polypharmacy • Frailty • Precipitating vs predisposing factors = classic exam theme

Answer 129

✅ Correct Answer: C ⸻ 🧠 Explanation (Exam-focused) CAM diagnostic criteria require: 👉 1. Acute onset + fluctuating course 👉 2. Inattention (ESSENTIAL) 👉 PLUS either: 👉 3. Disorganized thinking 👉 OR 👉 4. Altered level of consciousness ➡️ So: 1 + 2 + (3 or 4) ⸻ ❌ Why other options are wrong • A/B → too narrow • D → may occur but not required • E → nonspecific ⸻ 🔥 High-yield facts • Inattention = mandatory feature • CAM = most tested delirium tool • Fluctuation = key discriminator from dementia • Think: “1 + 2 + (3 or 4)”

Answer 130

✅ Correct Answer: C. Delirium ⸻ 🧠 Explanation Key features: 👉 Acute onset (after admission) 👉 Fluctuating consciousness 👉 Inattention 👉 Reversed sleep–wake cycle (very high yield) ➡️ Classic delirium ⸻ ❌ Why other options are wrong • Dementia → gradual, no fluctuation • Schizophrenia → no altered consciousness • Bipolar → mood symptoms dominate • Panic → episodic, not fluctuating cognition ⸻ 🔥 High-yield facts • Sleep reversal = classic delirium feature • Always think delirium post-admission • Fluctuation + inattention = diagnostic

Answer 131

✅ Correct Answer: C ⸻ 🧠 Explanation Delirium prevention is multicomponent and non-pharmacological: 👉 Early mobilization 👉 Sleep optimisation 👉 Orientation aids (clocks, calendars) 👉 Hydration 👉 Sensory aids (glasses, hearing aids) ⸻ ❌ Why other options are wrong • Sedatives/opioids → worsen delirium • Restraints → increase risk • Isolation → worsens confusion ⸻ 🔥 High-yield facts • Prevention can reduce delirium by 30–40% • Always avoid sedatives + anticholinergics • Orientation + sleep = core interventions

Answer 132

✅ Correct Answer: B. Increased cognitive impairment ⸻ 🧠 Explanation (Exam-focused) Anticholinergic drugs → ↓ acetylcholine 👉 In elderly brain (already cholinergic deficit): ➡️ Leads to: • Cognitive decline • Delirium • Falls • Confusion This directly ties to delirium pathophysiology: 👉 ↓ ACh = delirium risk ⸻ ❌ Why other options are wrong • A → opposite • C → increases fall risk ❌ • D → worsens confusion, not sleep • E → no consistent benefit ⸻ 🔥 High-yield facts • Anticholinergic burden = major delirium risk factor • Common offenders: • TCAs • Antihistamines • Oxybutynin • Antipsychotics • Always review meds in delirium • Linked to long-term cognitive decline

Answer 133

✅ Correct Answer: C ⸻ 🧠 Explanation Modern classification prefers: 👉 Late-onset schizophrenia (40–60 years) 👉 Very-late-onset schizophrenia-like psychosis (>60 years) This reflects: • Different clinical patterns • More sensory + organic contributions in very late onset ⸻ ❌ Why other options are wrong • A/B/E → not standard terminology • D → too vague ⸻ 🔥 High-yield facts • Late-onset = 40–60 years • Very-late-onset = >60 years • Often more: • Paranoia • Hallucinations • Less: • Negative symptoms

Answer 134

✅ Correct Answer: B. Visual hallucinations ⸻ 🧠 Explanation Unlike early schizophrenia: 👉 Elderly psychosis: • Visual hallucinations > auditory Reason: • Sensory impairment (vision/hearing loss) • Neurodegeneration ⸻ ❌ Why other options are wrong • Auditory hallucinations → more common in young schizophrenia • Thought disorder → less prominent • Negative symptoms → less prominent • Catatonia → rare ⸻ 🔥 High-yield facts • Old age psychosis = visual hallucinations • Young schizophrenia = auditory hallucinations • Always consider: • Dementia • Delirium • Sensory deprivation contributes

Answer 135

✅ Correct Answer: C. Late paraphrenia ⸻ 🧠 Explanation (Exam-focused) This is classic late-onset paranoid psychosis: 👉 Features: • Persecutory delusions (neighbours spying) • Third-person auditory hallucinations • Elderly onset ➡️ This constellation = late paraphrenia Often associated with: • Social isolation • Sensory impairment (hearing/vision loss) ⸻ ❌ Why other options are wrong • A. Early-onset schizophrenia → wrong age • B. Bipolar → no mood symptoms • D. Depression with psychosis → no depressive features • E. Delusional disorder → hallucinations less prominent ⸻ 🔥 High-yield facts • Late paraphrenia = elderly paranoid psychosis • Prominent: • Persecutory delusions • Auditory hallucinations • Often socially isolated females • Think “schizophrenia-like but late onset”

Answer 136

✅ Correct Answer: B. 3.4% ⸻ 🧠 Explanation Risk pattern: 👉 Late-onset paraphrenia: • ~3.4% risk in first-degree relatives Comparison: • Early-onset schizophrenia → ~5.8% • General population → ~1% ➡️ Suggests: • Some genetic component • But weaker than classic schizophrenia ⸻ ❌ Why other options are wrong • 5.8% → early-onset schizophrenia • 1% → general population • 0% → incorrect • 10% → too high ⸻ 🔥 High-yield facts • Late-onset psychosis = lower genetic loading • Still higher than general population • Exam loves comparing: • 1% vs 3.4% vs 5.8%

Answer 137

✅ Correct Answer: B. Charles Bonnet syndrome ⸻ 🧠 Explanation Classic triad: 👉 Visual impairment 👉 Complex visual hallucinations 👉 Preserved insight ➡️ = Charles Bonnet syndrome Patients: • Know hallucinations are not real • No cognitive impairment ⸻ ❌ Why other options are wrong • Delirium → impaired consciousness • Schizophrenia → lacks insight • Parkinson’s/dementia → cognitive decline present ⸻ 🔥 High-yield facts • Charles Bonnet = visual hallucinations + intact insight • Trigger = sensory deprivation (vision loss) • Management = reassurance • NOT a psychiatric disorder

Answer 138

✅ Correct Answer: E. ‘Insecure’ personality style ⸻ 🧠 Explanation (Exam-focused) Common risk factors for neurotic disorders (anxiety/depression spectrum) in elderly include: 👉 Major life events (bereavement, retirement) 👉 Physical illness 👉 Loneliness / social isolation 👉 Functional decline (impaired self-care) ➡️ “Insecure personality style” is not a recognised core risk factor in this context (exam trap). ⸻ ❌ Why other options are wrong • A–D → all well-established contributors • E → not typically listed in epidemiological risk models ⸻ 🔥 High-yield facts • Elderly mental health = strongly linked to social + physical factors • Loneliness = major driver of depression/anxiety • Functional decline → psychological distress • Exam often tests social determinants over personality traits

Answer 139

✅ Correct Answer: C. 10.2% ⸻ 🧠 Explanation Epidemiology: 👉 Age 65–74 → ~10.2% 👉 ≥75 → ~8.1% ➡️ Slight decrease with age: • Possible survivor bias • Cohort differences ⸻ ❌ Why other options are wrong • 8.1% → applies to ≥75 • Others → incorrect estimates ⸻ 🔥 High-yield facts • Depression/anxiety remain common in elderly • Prevalence slightly ↓ with age • Still underdiagnosed • High overlap with physical illness

Answer 140

✅ Correct Answer: B. 5% ⸻ 🧠 Explanation Epidemiology: 👉 >65 years: ➡️ ~5% have moderate–severe dementia 👉 >85 years: ➡️ Can exceed 30% ⸻ ❌ Why other options are wrong • 1% → too low • 10–30% → applies to older age groups (>80–85) ⸻ 🔥 High-yield facts • Dementia prevalence increases exponentially with age • 65+ → ~5% • 85+ → up to 30%+ • Age = strongest risk factor

Answer 141

✅ Correct Answer: C. More convenient and relaxing experience for the patient ⸻ 🧠 Explanation (Exam-focused) Home visits provide: 👉 Familiar environment → reduced anxiety 👉 More accurate functional assessment 👉 Opportunity to assess: • Living conditions • Medication adherence • Carer support ➡️ This improves clinical accuracy and patient comfort ⸻ ❌ Why other options are wrong • A → NOT for providers (time-consuming) • B → actually resource-intensive • D → opposite (often more informative) • E → incorrect (holistic assessment) ⸻ 🔥 High-yield facts • Home visits = functional assessment goldmine • Essential in dementia / frailty • Allows collateral history from carers • Exam loves “real-world context” questions

Answer 142

✅ Correct Answer: B. Diagnostic test and functional test ⸻ 🧠 Explanation Capacity assessment = 2 stages: 🔹 Stage 1 (Diagnostic) 👉 Is there an impairment/disturbance of mind or brain? 🔹 Stage 2 (Functional) 👉 Can the patient: • Understand • Retain • Weigh • Communicate ➡️ BOTH must be impaired → lack of capacity ⸻ ❌ Why other options are wrong • A → irrelevant • C → not MCA framework • D → not structured test • E → not standard approach ⸻ 🔥 High-yield facts • Functional test = 4 abilities (URWC) • BOTH stages required • Capacity = decision-specific

Answer 143

✅ Correct Answer: C. Person’s past and present wishes, beliefs, and values ⸻ 🧠 Explanation (Exam-focused) Under the Mental Capacity Act (MCA), best interests decisions must: 👉 Consider: • Past & present wishes • Beliefs & values • What the patient would have wanted 👉 Also include: • Family / carers input • Least restrictive option • Patient involvement as much as possible ❗ It is NOT just medical opinion ⸻ ❌ Why other options are wrong • A → too narrow (not holistic) • B → family ≠ sole decision-makers • D → clinician ≠ sole authority • E → financial ≠ primary factor ⸻ 🔥 High-yield facts • Best interests ≠ “doctor decides” ❗ • Must consider values + beliefs (very testable) • Involve patient as much as possible • Always choose least restrictive option

Answer 144

✅ Correct Answer: C. Knowledge of property extent, natural beneficiaries, and distribution plan ⸻ 🧠 Explanation Based on Banks v Goodfellow (1870): Patient must understand: 1️⃣ Nature of making a will 2️⃣ Extent of their property 3️⃣ Who the natural beneficiaries are 4️⃣ How they want to distribute assets 5️⃣ No mental disorder influencing decisions ⸻ ❌ Why other options are wrong • A → mental illness ≠ automatic incapacity • B → IQ irrelevant • D → not required legally • E → not mandatory ⸻ 🔥 High-yield facts • Banks v Goodfellow = CLASSIC exam question • Capacity = task-specific (making a will) • Psychiatric illness allowed if no influence on decision • Often appears in forensic psychiatry questions

Answer 145

✅ Correct Answer: B. Dementia ⸻ 🧠 Explanation Dementia affects: 👉 Visuospatial skills 👉 Judgement 👉 Reaction time 👉 Attention ➡️ Leads to unsafe driving 📌 UK (DVLA guidance): • Driving usually stopped after diagnosis • May continue only in very early stages with review ⸻ ❌ Why other options are wrong • A → risky but less consistently impairing cognition • C → episodic risk (not persistent like dementia) • D → not as directly impairing driving ability • E → minimal direct effect ⸻ 🔥 High-yield facts • Dementia = most exam-tested cause of unsafe driving • DVLA involvement = common exam theme • Visuospatial impairment = key mechanism • Always think “safety + legal responsibility”

Answer 146

✅ Correct Answer: C. Reassurance ⸻ 🧠 Explanation (Exam-focused) In Parkinson’s disease: 👉 Non-distressing hallucinations = DO NOT treat pharmacologically ➡️ Management = ✔ Reassurance ✔ Psychoeducation ⸻ When DO we treat? If hallucinations become: • Distressing • Dangerous Then stepwise: 1️⃣ Reduce dopaminergic meds 2️⃣ Add rivastigmine (if cognitive impairment) 3️⃣ Use quetiapine / clozapine if needed ⸻ ❌ Why other options are wrong • A (risperidone) → ❌ worsens parkinsonism • B (quetiapine) → only if distressing • D → increases hallucinations • E → unnecessary ⸻ 🔥 High-yield facts • Parkinson’s hallucinations often benign early • Always avoid antipsychotics unless necessary • First step = reduce dopaminergic drugs • Rivastigmine useful if cognitive impairment ⸻

Answer 147

✅ Correct Answer: A. Episodic memory ⸻ 🧠 Explanation Korsakoff syndrome (thiamine deficiency): 👉 Severe impairment in: • Episodic memory (autobiographical memory) 👉 Relative preservation of: • Procedural memory 📍 Pathology: • Mammillary bodies • Dorsomedial thalamus ⸻ ❌ Why other options are wrong • B → semantic less affected early • C/D → procedural/implicit preserved • E → working memory less prominent deficit ⸻ 🔥 High-yield facts • Korsakoff = anterograde amnesia + confabulation • Episodic memory = most affected • Caused by thiamine deficiency (alcohol) • Always give thiamine BEFORE glucose 🚨

Answer 148

✅ Correct Answer: D. Donepezil ⸻ 🧠 Explanation Mixed dementia (Alzheimer’s + vascular): 👉 Treat as Alzheimer’s component dominant ➡️ First-line: ✔ Cholinesterase inhibitors (Donepezil, Rivastigmine, Galantamine) 👉 Memantine: • Add in moderate–severe disease ⸻ ❌ Why other options are wrong • A → no evidence • B → incorrect (treatable) • C → second-line/add-on • E → only for depression ⸻ 🔥 High-yield facts • Mixed dementia → treat like Alzheimer’s • Cholinesterase inhibitors = first-line • Memantine = add-on • Very common exam trap

Answer 149

✅ Correct Answer: C. Parkinson’s disease dementia ⸻ 🧠 Explanation This is the “1-year rule” 🔥 (VERY HIGH-YIELD) 👉 If dementia occurs: • Before or within 1 year of motor symptoms → DLB • After >1 year → Parkinson’s disease dementia (PDD) Here: ✔ Motor symptoms for >12 months → PDD ⸻ ❌ Why other options are wrong • B (DLB) → dementia comes first or within 1 year • A/D → wrong clinical picture ⸻ 🔥 High-yield facts • 1-year rule = exam favourite 🚨 • PDD = later cognitive decline • DLB = early hallucinations + cognition first • Both are synucleinopathies

Answer 150

✅ Correct Answer: D. Head injury ⸻ 🧠 Explanation (Exam-focused) Head injury (especially moderate–severe traumatic brain injury) is a well-established risk factor for Alzheimer’s disease. 👉 Mechanism: • Chronic neuroinflammation • Amyloid deposition • Tau pathology ➡️ Leads to increased risk of later-life neurodegeneration ⸻ ❌ Why other options are wrong A. Depression • Association exists • BUT: ❗ Often prodrome or comorbidity, not strongest causal risk factor ⸻ B. Vitamin D deficiency • Weak association • ❗ Not a proven causal risk factor ⸻ C. Being male • ❌ Wrong — Alzheimer’s is actually more common in females ⸻ E. Aluminium exposure • ❌ Classic exam myth • No convincing evidence ⸻ 🔥 High-yield facts (VERY TESTABLE) • Strongest modifiable risk factors: • Head injury • Vascular risk factors (HTN, DM, smoking) • Depression: • Often early symptom (prodrome) rather than cause • Aluminium: • ❌ Myth — frequently tested trap • APOE ε4: • Strongest genetic risk factor (not in this question but HIGH-YIELD)

Answer 151

✅ Correct Answer: A. Recurrent well-formed visual hallucinations and episodic confusion ⸻ 🧠 Explanation (ICD-11 / Exam-focused) DLB is characterized by core clinical features: 👉 1. Fluctuating cognition (episodic confusion) 👉 2. Recurrent well-formed visual hallucinations 👉 3. Spontaneous parkinsonism 👉 4. REM sleep behaviour disorder (RBD) ⸻ 💡 Why A is the BEST answer? It combines TWO CORE FEATURES: ✔ Visual hallucinations (classic, well-formed) ✔ Cognitive fluctuation ➡️ This strongly supports probable DLB ⸻ ❌ Why other options are wrong (EXAM TRAPS) B. Repeated falls and resting tremor • Suggests parkinsonism • ❗ Only ONE core feature → weaker than A ⸻ C. Auditory hallucinations + delusions • Think schizophrenia / late paraphrenia • ❗ DLB = visual > auditory hallucinations ⸻ D. Constipation + REM sleep behaviour disorder • RBD = core feature ✅ • Constipation = autonomic symptom (supportive) • ❗ Still weaker than 2 core features in A ⸻ E. Postural instability + falls • Suggests parkinsonism • ❗ Again → only one feature ⸻ 🔥 High-yield facts (EXAM GOLD) • Visual hallucinations in DLB = well-formed (people, animals) • Fluctuating cognition = hallmark feature • Attention/executive > memory impairment early • MRI often normal or mild changes ⸻ 🎯 Exam Pearl (VERY IMPORTANT) 👉 If option contains: • Visual hallucinations + fluctuations → ALWAYS pick it 👉 Hierarchy in exam: • 2 core features > 1 core feature + supportive

Answer 152

** Previous Exam Question** ✅ Correct Answer: D. Huntington’s disease ⸻ 💡 High-yield exam answer (1 line) 👉 Young-onset dementia + behavioural change + choreiform movements + family history = Huntington’s disease ⸻ 🧠 Why this is correct (exam-focused) This question is testing pattern recognition of Huntington’s triad: 1️⃣ Cognitive decline • Executive dysfunction (early) • Not pure memory loss → frontal/subcortical pattern 2️⃣ Psychiatric/behavioural changes • Irritability • Personality change • Depression (very common in exams) 3️⃣ Movement disorder • Chorea → described here as “nervous twitches” (classic exam disguise) ⸻ 🔥 KEY CLUE (very exam-favourite) 👉 Father died young → autosomal dominant inheritance ➡️ Always think: • Huntington’s • CADASIL (but needs strokes/migraine)

Answer 153

Delirium 52% This is a case of hypoactive delirium. The fact that she was fine last week goes against conditions such as dementia or depression.

Answer 154

✅ Correct Answer: C. Use of diphenhydramine ⸻ 💡 High-yield exam answer (1 line) 👉 Anticholinergic drugs (e.g., diphenhydramine) = major precipitant of delirium in elderly ⸻ 🧠 Why this is correct (exam-focused) 🔑 Core mechanism: • Diphenhydramine = 1st gen antihistamine • Strong anticholinergic effect ➡️ Blocks acetylcholine → ➡️ ↓ central cholinergic transmission → ➡️ Delirium ⸻ 🔥 WHY THIS IS HIGH-YIELD: 👉 Delirium = LOW acetylcholine state So anything that: • ↓ ACh • ↑ dopamine ➡️ predisposes to delirium 🚀 Ultra High-Yield Facts (Paper B GOLD) 🧠 1. MOST IMPORTANT DRUG CAUSE 👉 Anticholinergics = #1 pharmacological trigger Examples: • Diphenhydramine • Amitriptyline • Oxybutynin • Chlorpromazine ⸻ ⚠️ 2. “Anticholinergic burden” concept 👉 Exam LOVES this • Cumulative effect → delirium risk ↑ • Especially in elderly ⸻ 🔬 3. Neurotransmitter imbalance in delirium • ↓ Acetylcholine • ↑ Dopamine 👉 This is why: • Anticholinergics → worsen delirium • Antipsychotics → sometimes used

Answer 155

**Previous Exam Question** ✅ Correct Answer: E. Risperidone ⸻ 💡 High-yield exam answer (1 line) 👉 Risperidone = ONLY licensed antipsychotic for BPSD (Alzheimer’s) in the UK ⸻ 🧠 Why this is correct (exam-focused) 🔑 Core principle: 👉 In MRCPsych → LICENSING matters • Risperidone = ✔ Licensed in UK for BPSD (aggression/psychosis in Alzheimer’s) ✔ Best evidence + exam favourite ⸻ ⚠️ Important nuance: • Use only if symptoms are severe/distressing or risk present • After non-pharmacological measures fail ⸻ ❌ Why others are wrong (exam traps) ⸻ ❌ Quetiapine • Used in Parkinson’s / Lewy body dementia • NOT first-line for Alzheimer’s 👉 🔥 EXAM TRAP: People choose quetiapine thinking “safer” → WRONG here ⸻ ❌ Haloperidol • Typical antipsychotic → ↑ EPS, ↑ stroke risk • Avoid unless severe acute agitation/delirium ⸻ ❌ Clozapine • Used in Parkinson’s psychosis • Requires monitoring → NOT first-line ⸻ ❌ Amisulpride • Not licensed for BPSD • Not commonly used in this context ⸻ 🚀 Ultra High-Yield Facts (MUST KNOW) 🧠 1. ONLY licensed drug 👉 Risperidone = only licensed for BPSD in UK ⸻ ⚠️ 2. Major risk (VERY EXAMINABLE) • ↑ Stroke risk • ↑ Mortality in dementia 👉 Black box warning ⸻ ⏳ 3. Duration rule 👉 Review at 6–12 weeks 👉 Stop if no benefit ⸻ 🧠 4. First step ALWAYS 👉 Non-pharmacological first: • Reassurance • Environment • Treat triggers

Answer 156

✅ Correct Answer: D. Patient’s own concern about memory loss ⸻ 💡 High-yield exam answer (1 line) 👉 Pseudodementia = patient complains; 👉 dementia = patient lacks insight Pseudodementia 👉 Cognitive impairment caused by depression that mimics dementia but is potentially reversible 🔑 TRIAD: 1. Low mood 2. Cognitive complaints 3. Preserved insight

Answer 157

✅ Correct Answer: B — Memory is relatively spared early ⸻ 💡 High-yield exam answer (1 line) 👉 FTD presents with behavioural/language changes with relatively preserved memory early, unlike Alzheimer’s ⸻ 🧠 Clear exam-focused explanation 🔑 Core difference: • Alzheimer’s → memory FIRST • FTD → behaviour/personality FIRST ⸻ 🧠 FTD (frontotemporal dementia): • Early disinhibition • Apathy / loss of empathy • Executive dysfunction • Language problems (PPA variants) • 🟢 Memory relatively preserved early ⸻ 🧠 Alzheimer’s disease: • Early episodic memory impairment • Later → language, visuospatial, executive

Answer 158

✅ Correct Answer: D — Haloperidol ⸻ 💡 High-yield exam answer (1 line) 👉 Low-dose haloperidol is first-line for severe agitation/distress in delirium (if no contraindications) 💊 Why Haloperidol? • First-line per NICE • Effective for agitation in delirium • Use LOW DOSE (e.g., 0.5 mg) • Avoid if: Parkinson’s Lewy body dementia Prolonged QT ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. Zolpidem ❌ 👉 Worsens confusion → delirium trigger ⸻ B. Lorazepam ❌ 👉 Benzos worsen delirium 👉 Only use in: • Alcohol withdrawal • Benzodiazepine withdrawal ⸻ C. Aripiprazole ❌ 👉 Not first-line Although it has some efficacy in managing psychiatric symptoms, it is not the first choice for delirium, especially in emergency settings where rapid symptom control is needed. Clinically, aripiprazole might be considered for longer-term management of underlying psychiatric conditions but is not preferred for immediate delirium treatment. ⸻ E. Diazepam ❌ 👉 Long-acting benzo → VERY BAD in elderly delirium

Answer 159

✅ Correct Answer: B — Macular degeneration ⸻ 💡 High-yield exam answer (1 line) 👉 Charles Bonnet syndrome = visual hallucinations due to visual impairment (classically macular degeneration) ⸻ 🧠 Clear exam-focused explanation 🔑 What is Charles Bonnet Syndrome (CBS)? 👉 Visual release hallucinations in visually impaired patients • Elderly patient • Complex, vivid visual hallucinations (people, animals, scenes) • Insight preserved ✅ • No psychiatric illness ⸻ 🔑 Why macular degeneration? • Most common cause of central visual loss in elderly • Strongly associated with CBS • Brain “fills in” missing visual input → hallucinations

Answer 160

**Previous Exam Question** ✅ Correct Answer: E — Reduce the dose and continue ⸻ 💡 High-yield exam answer (1 line) 👉 If cholinesterase inhibitor causes side effects but is effective → reduce dose rather than stop ⸻ 🧠 Clear exam-focused explanation 🔑 What’s happening? 👉 Donepezil = acetylcholinesterase inhibitor ➡️ ↑ acetylcholine → parasympathetic effects ⸻ 🔑 Side effects (VERY IMPORTANT): • Urinary incontinence 🚽 • Diarrhoea • Bradycardia • Sweating ⸻ 🔑 Key principle: 👉 Patient is benefiting cognitively 👉 Side effect is manageable ➡️ DO NOT stop drug immediately ⸻ ✔️ Best approach: • Reduce dose • Continue monitoring • Consider adjunct (e.g. bladder management) ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. Switch to memantine ❌ 👉 Only if: • Intolerable side effects • Moderate–severe disease ⸻ B. Continue same dose ❌ 👉 Ignoring side effects = poor practice ⸻ C. Gradual withdrawal ❌ 👉 Only if drug not tolerated at all ⸻ D. Stop immediately ❌ 👉 Too aggressive 👉 Loses cognitive benefit

Answer 161

✅ Correct Answer: D — Dementia with Lewy Bodies (DLB) ⸻ 👉 DLB = parkinsonism + visual hallucinations + fluctuating cognition + antipsychotic sensitivity ⸻ 🔑 This is a classic tetrad question 👉 Core features of DLB (ICD-11/NICE): 1. Fluctuating cognition 2. Recurrent well-formed visual hallucinations 3. Spontaneous parkinsonism 4. Severe antipsychotic sensitivity ⚠️ (VERY TESTED) ⸻ 🔥 The giveaway clue here: 👉 Extreme sensitivity to antipsychotics ➡️ This is almost pathognomonic in exams for DLB ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. MSA ❌ 👉 Prominent autonomic failure (e.g. hypotension, urinary retention) 👉 NOT hallucinations ⸻ B. PSP ❌ 👉 Early falls + vertical gaze palsy 👉 NOT hallucinations ⸻ C. CBD ❌ 👉 Asymmetric rigidity + alien limb 👉 Cortical signs (apraxia) ⸻ E. Pick’s disease (FTD) ❌ 👉 Behavioural changes 👉 No hallucinations early

Answer 162

✅ Correct Answer: B — Fluoxetine ** SSRIs, and nortriptyline are recommended for post CVA depression.** ⸻ 💡 High-yield exam answer (1 line) 👉 SSRIs (e.g. fluoxetine) are first-line for post-stroke depression ⸻ 🧠 Clear exam-focused explanation 🔑 Diagnosis: 👉 Post-stroke (post-CVA) depression ⸻ 🔑 First-line treatment: 👉 SSRIs (NICE / Maudsley) • Fluoxetine • Citalopram • Sertraline ✔️ Best safety profile in elderly ✔️ Minimal anticholinergic effects ✔️ Evidence for post-stroke recovery benefit ⸻ 🔥 Why fluoxetine specifically? • Strong evidence in post-stroke depression trials • May also help motor recovery (exam pearl) ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. Mianserin ❌ 👉 Not first-line 👉 Sedating, less evidence ⸻ C. Venlafaxine ❌ 👉 SNRI → ↑ BP ⚠️ 👉 Not ideal post-stroke ⸻ D. Reboxetine ❌ 👉 Weak evidence 👉 Not commonly used ⸻ E. Amitriptyline ❌ 👉 Strong anticholinergic effects 👉 Risk in elderly: • Falls • Confusion • Cardiac toxicity ⸻ 🎯 What the exam is testing 👉 Safe antidepressant choice in: • Elderly • Post-stroke patients ⸻ 🔥 High-yield facts (MUST KNOW) 1. SSRIs = first-line in post-stroke depression 2. Avoid TCAs in elderly → anticholinergic + cardiac risk 3. Venlafaxine → caution (hypertension) 4. Fluoxetine/citalopram = commonly tested answers 5. Depression common after stroke (~30%)

Answer 163

Pseudodementia The recent bereavement and low mood suggest an affective disorder. 'Don't know' answers are common in pseudodementia.

Answer 164

✅ Correct Answer: D — Music therapy ⸻ 💡 High-yield exam answer (1 line) 👉 Music therapy has the strongest evidence among non-pharmacological treatments for BPSD 🔑 What is BPSD? 👉 Behavioural and psychological symptoms of dementia: • Agitation • Aggression • Anxiety • Wandering • Psychosis 🔑 First-line management: 👉 NON-pharmacological interventions (NICE) ⸻ 🎵 Why music therapy? • Strongest evidence base • Reduces: Agitation Anxiety Distress • Improves: Mood Engagement Social interaction The correct answer is Music therapy. Music therapy has been shown in numerous studies to have a significant impact on reducing the behavioural and psychological symptoms of dementia, such as agitation and anxiety. It is thought that music can stimulate emotional responses, promote social interaction, and aid in communication, thereby helping to improve quality of life for people with dementia. According to UK guidelines from the National Institute for Health and Care Excellence (NICE), music therapy is recommended as a non-pharmacological intervention for managing behavioural and psychological symptoms of dementia. Snoezelen rooms, also known as multi-sensory environments, are designed to stimulate the senses through sounds, lights, colours, and textures. While some research suggests they may have benefits for people with dementia by providing a calming environment that can reduce agitation, the evidence is not as robust or consistent as it is for music therapy. Exercise therapy can be beneficial for general health and wellbeing, but its specific effects on behavioural and psychological symptoms of dementia are less clear. Some studies suggest that regular physical activity may help to slow cognitive decline and improve mood in people with mild to moderate dementia. However, more research is needed to establish its effectiveness in managing these symptoms specifically. Animal therapy, involving interactions with animals such as dogs or cats, has been suggested to have potential benefits for people with dementia. It may help to reduce stress levels and increase social interaction. However, like Snoezelen rooms and exercise therapy, the evidence supporting its use in this context is limited compared to music therapy. Finally, Melissa balm, also known as lemon balm (Melissa officinalis), has been used traditionally for its calming properties. Some small-scale studies suggest it might help reduce agitation in people with Alzheimer's disease when used topically or aromatically. However, larger, high-quality trials are needed to confirm these findings and compare its effectiveness with other interventions.

Answer 165

✅ Correct Answer: E — Neuroleptics can worsen movement disorders in Parkinson’s disease ⸻ 💡 High-yield exam answer (1 line) 👉 Dopamine-blocking antipsychotics worsen motor symptoms in Parkinson’s disease ⸻ 🧠 Clear exam-focused explanation 🔑 Core concept: Parkinson’s disease = dopamine deficiency (nigrostriatal pathway) 👉 Antipsychotics (especially typicals): • Block D2 receptors • Further ↓ dopamine ➡️ Result: • Worsened: • Bradykinesia • Rigidity • Tremor ⸻ ⚠️ Clinical implication (VERY EXAM RELEVANT) 👉 Avoid: • Haloperidol • Risperidone (relative caution) 👉 Prefer if needed: • Quetiapine • Clozapine (gold standard but monitoring required) ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. ❌ Hallucinations less common in PD dementia 👉 FALSE ➡️ Hallucinations are MORE common with: • Dementia • Lewy body pathology ⸻ B. ❌ Landscapes hallucinations 👉 Not typical ➡️ Classic = • People / animals (formed visual hallucinations) ⸻ C. ❌ Exclusively visual 👉 FALSE ➡️ Mostly visual, but can have: • Auditory • Delusional features ⸻ D. ❌ Antiparkinsonian drugs treat psychosis 👉 FALSE ➡️ They often CAUSE psychosis • Levodopa • Dopamine agonists

Answer 166

✅ Correct Answer: B — FDG PET ⸻ 💡 High-yield exam answer (1 line) 👉 FDG-PET is used to differentiate dementia subtypes based on metabolic patterns ⸻ 🧠 Clear exam-focused explanation 🔑 What FDG-PET does: • Measures glucose metabolism in the brain • Reflects neuronal activity ➡️ Different dementias = different metabolic patterns 📌 NICE logic: • If diagnosis unclear after clinical + structural imaging 👉 Use FDG-PET (or HMPAO SPECT) ⸻ ❌ Why other options are wrong (EXAM TRAPS) A. ❌ ECD SPECT 👉 Not recommended by NICE for differentiation ⸻ C. ❌ FDHT PET 👉 Used in research / androgen receptor imaging ➡️ Not dementia differentiation ⸻ D. ❌ FP-CIT SPECT (DaTSCAN) 👉 Used for: • Lewy body dementia vs Alzheimer’s ➡️ NOT for AD vs FTD vs vascular ⸻ E. ❌ F-DOPA PET 👉 Dopaminergic imaging ➡️ Parkinsonian syndromes

Answer 167

✅ Correct Answer: C — Reduced dopamine transporter uptake in the basal ganglia ⸻ 💡 High-yield exam answer (1 line) 👉 DLB shows reduced dopamine transporter uptake on DaTSCAN ⸻ 🧠 Clear exam-focused explanation 🔑 What is being tested: 👉 Nigrostriatal degeneration in Lewy body disease • Loss of dopaminergic neurons in: • Substantia nigra • Leads to ↓ dopamine in: • Striatum (caudate + putamen) ➡️ Therefore: 👉 ↓ Dopamine transporter (DaT) uptake ⸻ 🧪 Imaging modality (VERY IMPORTANT) 👉 FP-CIT SPECT (DaTSCAN) • Measures dopamine transporter activity • Marker of presynaptic dopaminergic neurons

Answer 168

✅ Correct Answer: D — Memantine is considered a second-line option for dementia with Lewy bodies ⸻ 💡 High-yield exam answer (1 line) 👉 DLB → AChE-I first-line, Memantine second-line/add-on ⸻ 🧠 Clear exam-focused explanation 🔑 Dementia with Lewy Bodies (DLB): • First-line → AChE inhibitors (Donepezil, Rivastigmine) • If: • Not tolerated OR • Insufficient response ➡️ Add / switch to: 👉 Memantine (second-line) ⸻ ❌ Why other options are wrong (VERY HIGH-YIELD TRAPS) A. ❌ AChE-Is not recommended in mixed dementia 👉 FALSE ➡️ They ARE recommended, especially if: • Alzheimer’s component present ⸻ B. ❌ AChE-I first-line for FTD 👉 FALSE ➡️ FTD: • No benefit • May worsen behaviour ⸻ C. ❌ Avoid AChE-I in Parkinson’s dementia 👉 FALSE ➡️ Actually: 👉 Rivastigmine is FIRST-LINE in Parkinson’s dementia ⸻ E. ❌ Memantine first-line for vascular dementia 👉 FALSE ➡️ No strong evidence ➡️ Focus = vascular risk factor control

Answer 169

✅ Correct Answer: D — Memantine ⸻ 💡 High-yield exam answer (1 line) 👉 Severe Alzheimer’s (MMSE <10) → Memantine ⸻ 🧠 Clear exam-focused explanation 🔑 Step 1: Recognise severity 👉 MMSE = 9 ➡️ This = Severe Alzheimer’s disease 🔑 Why Memantine? • NMDA receptor antagonist • Reduces glutamate excitotoxicity • Used when: Severe disease OR AChE-I not tolerated

Answer 170

✅ Correct Answer: D — Pseudobulbar affect ⸻ 💡 High-yield exam answer (1 line) 👉 Emotional expression ≠ emotional experience → think pseudobulbar affect ⸻ 🧠 Clear exam-focused explanation 🔑 Core concept: 👉 Loss of emotional control due to neurological disease ⸻ 📌 Key features: • Involuntary laughing or crying • Incongruent with actual mood • Laughing when sad ❗ • Patient feels embarrassed • Cannot control it 🔥 High-yield facts 1. Pseudobulbar affect = emotional incontinence 2. Common in MS, stroke, ALS 3. Episodes are brief, sudden, uncontrollable 4. Patient insight usually preserved 5. Often misdiagnosed as depression ⸻ 💊 Treatment (VERY EXAM RELEVANT) 👉 First-line: • SSRIs (e.g. citalopram, sertraline) • TCAs (less commonly) 👉 Specialist: • Dextromethorphan + quinidine

Answer 171

✅ Correct answer: Lorazepam ⸻ 💡 High-yield exam answer 👉 Benzodiazepines worsen delirium + cognition → worst option in dementia According to the Maudsley Guidelines, benzodiazepines such as lorazepam are not recommended for the long-term management of behavioural and psychological symptoms of dementia (BPSD). They carry significant risks in this population, including sedation, confusion, falls, worsening cognitive impairment, and paradoxical agitation. Clinically, their use should be reserved only for very short-term crisis management where non-drug measures and safer alternatives have failed.

Answer 172

**Previous Exam Question** ✅ Correct answer: Resolves spontaneously within 24 hours ⸻ 💡 High-yield exam answer (1 line) 👉 TGA = sudden anterograde amnesia lasting <24h, with full recovery ❌ “Flashing lights” 👉 That’s: • Epilepsy (photosensitive seizures) ⸻ 🧠 What triggers TGA? (HIGH-YIELD PEARL) Often preceded by: • Emotional stress • Physical exertion • Cold water immersion • Sexual activity 👉 Think: “sudden physiological stress” ⸻ 🧠 Core concept (this is what examiners LOVE) 🧩 TGA = • Sudden onset • Anterograde amnesia (can’t form new memories) • Repetitive questioning (“Where am I?”) • Preserved: • Identity • Language • consciousness 👉 NO focal neuro deficits 👉 Resolves within 24 hours (usually 6–12h) ⸻ ⚖️ Why the other options are wrong (exam traps) ❌ “Young females” 👉 NO → typically: • Age 50–70 • Slight male predominance ⸻ ❌ “Motor deficits” 👉 NO → if present → think: • Stroke • TIA 🚨 This is a red flag against TGA

Answer 173

✅ Correct answer: More common in women than men ⸻ 💡 High-yield exam answer (1 line) 👉 Paraphrenia = late-onset psychosis in elderly women (>60) with preserved cognition ⸻ 🧠 What is paraphrenia? (core concept) 👉 Think of it as: “Schizophrenia-like illness in old age WITHOUT dementia” ⸻ 📌 Classic features (EXAM GOLD) • 👵 Late onset → usually >60 • 👩 More common in women • 🧠 Cognition preserved (this is KEY) • 👂 Auditory hallucinations • 🕵️‍♀️ Paranoid delusions (often elaborate) • 🧍‍♀️ Personality relatively preserved 🔥 High-yield facts 1. Late-onset schizophrenia-like psychosis = paraphrenia 2. Women > men (EXAM FACT) 3. Cognition preserved → distinguishes from dementia 4. Often linked to: • Social isolation • Sensory impairment (hearing loss 👂) 5. Less formal thought disorder than schizophrenia

Answer 174

✅ Correct answer: Up to 50% have no psychiatric condition ⸻ 💡 High-yield exam answer (1 line) 👉 Diogenes syndrome = severe self-neglect ± hoarding, often WITHOUT formal psychiatric illness ⸻ 🧠 What is Diogenes syndrome? (core concept) 👉 Think: “Extreme self-neglect + squalor in socially isolated individuals” ⸻ 📌 Classic features (EXAM GOLD) • 🧍‍♂️ Severe self-neglect • 🏚️ Domestic squalor • 📦 Hoarding (but not the same as hoarding disorder!) • 🚫 Refusal of help • 🧠 May have: • Normal cognition OR • Dementia / psychiatric illness The correct answer is As many as 50% of cases do not have a psychiatric condition. This is a significant aspect of Diogenes syndrome (DS), as not all individuals with this condition have a recognised psychiatric illness. Studies have indicated that up to half of the cases of DS may occur without a formal psychiatric diagnosis. Clinically, this suggests that healthcare professionals need to take a more comprehensive approach when assessing patients with DS, considering social factors, life events, and general health, rather than relying solely on the presence of psychiatric conditions. The most common precipitating factor is an acute medical illness is incorrect. While medical issues can contribute to the development of DS, the most common precipitating factor is the loss of a close relative who had been providing care. This loss often leads to a decline in self-care and social isolation, which are hallmarks of the syndrome. Recognising the impact of such life events is crucial in clinical practice, as early intervention could prevent further deterioration. Dementia is associated in up to 90% of cases is not accurate. Although dementia is often a comorbidity in DS, it is not present in such a high proportion of cases. Cognitive decline, including dementia, is frequently seen in patients with DS, but the association is lower, and attributing DS to dementia in 90% of cases overstates the connection. Clinicians need to be aware that other factors, including depression and alcoholism, can also contribute to the syndrome. It is seen exclusively in the elderly is also incorrect. Although Diogenes syndrome predominantly affects elderly individuals, it is not exclusive to this population. Younger individuals can present with similar symptoms, though this is less common. Clinically, it is important not to rule out DS in younger patients, especially if they exhibit the characteristic behaviours of self-neglect, social withdrawal, and hoarding. Diogenes syndrome is synonymous with hoarding disorder is incorrect. While hoarding is a feature of DS, the two conditions are distinct. Hoarding disorder usually begins earlier in life and involves an emotional attachment to objects. In contrast, DS tends to occur later in life, often triggered by a significant life event, and the hoarding behaviour is not driven by attachment to items. Differentiating between these two conditions is essential for appropriate management and treatment strategies, as their underlying causes and treatment approaches may differ.

Answer 175

✅ Correct answer: Risperidone ⸻ 💡 High-yield exam answer (1 line) 👉 Risperidone = only antipsychotic with strong RCT evidence + UK licence for BPSD ⸻ 🧠 Why risperidone? (EXAM LOGIC) Risperidone: • ✅ Placebo-controlled RCT evidence • ✅ Reduces aggression/agitation in dementia • ✅ ONLY licensed drug for BPSD in UK 👉 That combination = automatic exam answer ⸻ ⚖️ Why the others are wrong (THIS is what they test) ❌ Quetiapine • Often used clinically (esp. Parkinson’s/LBD) • BUT: • ❌ Weak evidence • ❌ No strong RCT support ⸻ ❌ Clozapine • Used in: • Parkinson’s psychosis • ❌ NOT for dementia aggression • ❌ No strong RCT evidence here ⸻ ❌ Amisulpride / Chlorpromazine • ❌ Not evidence-based for BPSD • ❌ Higher side effect burden

Answer 176

✅ Correct answer Senile squalor syndrome (Diogenes syndrome) ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Core triad: → Self-neglect → Hoarding (often rubbish) → Social withdrawal 👉 Classic for: ➡️ Senile squalor (Diogenes syndrome) ⸻ 🔥 Key insight (VERY EXAM IMPORTANT): 👉 This is NOT OCD hoarding Because: • No distress about hoarding • No insight • Severe neglect ➡️ It is a behavioural syndrome, not a classic psychiatric disorder ⸻ 🧠 Underlying associations: • Often linked to: → Personality disorder → Frontal lobe dysfunction → Dementia (sometimes) ⸻ 🔥 Typical presentation: • Living in filthy conditions • Refusal of help • Poor hygiene • Malnutrition ⸻ Why other options are wrong: • OCD ❌ → Ego-dystonic + distress • Alzheimer’s ❌ → Memory predominant • Charles Bonnet ❌ → Visual hallucinations • Schizophrenia ❌ → Psychosis, not this pattern ⸻ 4️⃣ 📘 MRCPsych concept • Senile squalor: → Not formal DSM diagnosis → Recognised clinical syndrome Exam is testing → Old age psychiatry pattern recognition ⸻ 5️⃣ ⭐ High-yield facts • Also called: → Diogenes syndrome • Features: → Hoarding + neglect + isolation • Insight: → Typically absent • Associated with: → Frontal dysfunction

Answer 177

✅ Correct answer Antipsychotics ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Triad: → Confusion → Tremor → Rigidity 👉 Suggests: ➡️ Parkinsonism / Lewy body dementia / delirium ⸻ 🔥 Key principle: 👉 Antipsychotics: • Block dopamine ➡️ Worsen: → Rigidity → Tremor → Confusion ⸻ 🧠 Critical exam scenario: Lewy Body Dementia (VERY HIGH-YIELD) • Extremely sensitive to antipsychotics • Can cause: → Severe rigidity → Collapse → Death ⸻ 🔥 Mechanism: • D2 blockade → ↓ dopamine • Already low dopamine → worsens motor + cognition ⸻ Why others are wrong: • Cholinesterase inhibitors ❌ → Actually helpful in LBD • Antimuscarinics ❌ → Can worsen confusion, but NOT tremor/rigidity pattern • Benzodiazepines ❌ → Sedation, falls — but not EPS • Levodopa ❌ → Improves Parkinsonian symptoms ⸻ 4️⃣ 📘 NICE / Maudsley rules • Avoid antipsychotics in: → Parkinson’s disease → Lewy body dementia • If needed: → Use cautiously (e.g. quetiapine) Exam is testing → Drug contraindications in neuro conditions ⸻ 5️⃣ ⭐ High-yield facts • Antipsychotics → EPS (tremor, rigidity) • LBD → neuroleptic sensitivity • Parkinson’s → avoid dopamine blockers • Use: → Quetiapine or clozapine if necessary

Answer 178

✅ Correct answer As required haloperidol ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Acute onset + fluctuating course → Delirium • Foul-smelling urine → likely UTI trigger 👉 Management principle: 1. Treat cause (infection) 2. Manage agitation safely ➡️ First-line drug: 👉 PRN (as required) low-dose haloperidol ⸻ 🔥 Key exam rule: • Delirium + agitation → 👉 PRN antipsychotic (NOT regular, NOT benzos) ⸻ 🧠 Why PRN and not regular? • Delirium fluctuates • Avoid oversedation • Use lowest effective dose ⸻ 🔥 Benzodiazepines rule (VERY HIGH-YIELD): Use ONLY if: • Alcohol withdrawal • Benzodiazepine withdrawal 👉 Otherwise: ❌ worsen delirium ⸻ Why other options are wrong: • Lorazepam ❌ → worsens confusion • Regular haloperidol ❌ → over-sedation risk • Trazodone ❌ → not acute delirium management ⸻ 4️⃣ 📘 NICE / Maudsley rules • Delirium: → Treat underlying cause → Use short-term antipsychotic PRN if distressed Exam is testing → Delirium management hierarchy ⸻ 5️⃣ ⭐ High-yield facts • Delirium = acute + fluctuating • Common causes: → Infection (UTI!) • First-line drug: → Haloperidol PRN • Avoid benzos unless withdrawal

Answer 179

✅ Correct answer Fronto-temporal dementia (FTD) ⸻ 3️⃣ Clear, exam-focused explanation Why this is correct: • Key clue: → Language impairment early → Memory relatively preserved 👉 Classic for: ➡️ Frontotemporal dementia (temporal variant) ⸻ 🔥 Key subtype: • Semantic dementia: → Word-finding difficulty → Loss of meaning ⸻ 🧠 Core exam insight: 👉 Alzheimer’s = memory first 👉 FTD = behaviour/language first ⸻ 🔥 Features of FTD: • Early: → Personality change → Disinhibition → Language impairment • Later: → Memory declines ⸻ Why other options are wrong: • Alzheimer’s (not listed but trap) → memory first • Lewy body ❌ → hallucinations + fluctuations • Vascular ❌ → stepwise decline • Parkinson’s ❌ → motor features first ⸻ 4️⃣ 📘 NICE / ICD rules • FTD: → early behavioural or language changes • Memory relatively spared initially Exam is testing → Dementia subtype differentiation ⸻ 5️⃣ ⭐ High-yield facts • FTD = early onset (<65 common) • Language variant = semantic dementia • Behavioural variant = disinhibition • Memory preserved early

Answer 180

✅ Correct answer: Cornell Scale for Depression ⸻ 💡 Deep Explanation The Cornell Scale for Depression in Dementia (CSDD) is specifically designed for: 👉 Patients with cognitive impairment 👉 Uses BOTH: • patient interview • caregiver/informant input ⸻ 🔥 Why this matters In dementia: ❌ Self-report scales (e.g. Beck) → unreliable ✔ Need observer + collateral information ⸻ ❌ Why others are wrong • Beck → requires insight + cognition • MADRS / Hamilton → general depression scales • Geriatric scale → better than Beck, but still less accurate than Cornell in dementia ⸻ ⚠️ Exam trap 👉 “Depression + dementia” ➡️ ALWAYS think: Cornell scale ⸻ 🔥 High-yield facts • Gold standard in dementia depression • Includes: mood behaviour physical symptoms • Used in moderate–severe dementia

Answer 181

✅ Correct answer: Pulse 55/min ⸻ 💡 Deep Explanation Donepezil = acetylcholinesterase inhibitor 👉 Increases acetylcholine → enhances parasympathetic (vagal) tone ➡️ Result: ❗ Bradycardia ⸻ 🔥 Why pulse matters • HR <60 → caution • HR 50–60: • asymptomatic → monitor • symptomatic → STOP drug ⸻ ❌ Why others are wrong • Mild hypertension → irrelevant • Tachycardia → not typical effect • First-degree block → caution, but bradycardia is the key exam trigger 🔥 High-yield facts • Can cause: • syncope • falls • heart block • Avoid in: • sick sinus syndrome • conduction disorders

Answer 182

✅ Correct answer: Practical driving test ⸻ 💡 Deep Explanation 👉 Cognitive tests ≠ real-world driving The only reliable predictor: ➡️ Actual on-road driving assessment ⸻ 🔥 Why not MMSE / clock test? They: • assess cognition • DO NOT reflect: • reaction time • judgement • real driving ability ⸻ 🚗 UK exam gold rule 👉 All dementia patients must: ➡️ Notify DVLA DVLA may: • request medical reports • arrange practical driving assessment ⸻ ❌ Why others are wrong • Visual acuity → necessary but insufficient • MMSE → poor correlation • Clock test → screening only ⸻ ⚠️ Exam trap 👉 They LOVE asking: “best predictor” ➡️ ALWAYS = practical test ⸻ 🔥 High-yield facts • Driving ability declines with: • executive dysfunction • visuospatial impairment • Red flags: • getting lost • near misses • poor judgement

Answer 183

✅ Correct answer: Clozapine ⸻ 💡 Deep Explanation Elderly patients are highly vulnerable to clozapine toxicity, especially: 👉 Agranulocytosis / neutropenia 👉 Sedation → falls 👉 Orthostatic hypotension → syncope 👉 Anticholinergic effects → delirium, constipation, urinary retention ⸻ 🔥 Why clozapine is especially risky • Requires strict blood monitoring • Immune system weaker in elderly • Higher mortality risk if complications occur ⸻ ⚠️ VERY HIGH-YIELD EXAM PEARL 👉 “Elderly + antipsychotic caution” has TWO layers: 1️⃣ General rule (ALL antipsychotics) → ↑ stroke + mortality risk in dementia 2️⃣ Specific drug risk → Clozapine = hematological danger ⸻ ❌ Why others are less risky • Quetiapine → often preferred in Parkinson’s / LBD • Aripiprazole → lower metabolic + sedation • Risperidone → commonly used (but still caution) • Olanzapine → metabolic risk, not acute fatal like clozapine ⸻ 🔥 High-yield facts • Clozapine = ONLY drug for treatment-resistant schizophrenia • BUT: • NOT first-line in elderly • Avoid unless absolutely necessary • Causes: • myocarditis • seizures • severe constipation → ileus (!! exam favourite)

Answer 184

✅ Correct answer: Older patients who self-harm are at more risk of completion of suicide ⸻ 💡 Deep Explanation This is one of the most important suicide epidemiology rules: 👉 In elderly: • Self-harm = high lethality intent • Less impulsive → more planned • More medically serious attempts ➡️ Therefore: ❗ Higher completion rate per attempt ❌ Why others are wrong • Hanging → more common in younger men • Psychosis → NOT main cause (depression is) • Dementia → weak association • Females → ❌ males have higher suicide rates ⸻ ⚠️ VERY HIGH-YIELD 👉 Depression = present in ~2/3 of elderly suicides (not psychosis — classic trap) ⸻ 🔥 High-yield facts • Elderly suicide: • more planned • less help-seeking • higher lethality • Risk factors: • depression • isolation • physical illness • bereavement • Males > females (3–4x)

Answer 185

✅ Correct answer: CT scan ⸻ 💡 Deep Explanation This is testing acute confusion = delirium / stroke until proven otherwise 👉 Key features: • acute onset • vascular risk factors (HTN, diabetes) • possible stroke/TIA ⸻ 🔥 Why CT is first-line 👉 Immediate rule-out of intracranial haemorrhage ✔ Fast ✔ Available ✔ Safe with pacemaker ⸻ ⚠️ CRITICAL EXAM TRAP 👉 Pacemaker present → MRI contraindicated ➡️ Automatically eliminates MRI ⸻ ❌ Why others are wrong • MRI → better detail BUT not first-line + contraindicated here • LP → only if infection suspected • PET/SPECT → research / dementia imaging ⸻ 🔥 High-yield facts • Acute confusion = delirium until proven otherwise • First-line imaging: 👉 Non-contrast CT head • Stroke pathway: 👉 CT FIRST → then further imaging

Answer 186

✅ Correct answer: B. Delirium ⸻ 💡 Explanation This is a classic delirium vignette: 👉 Key triad: • Acute onset • Fluctuating consciousness • Inattention 👉 Supporting features: • Visual hallucinations (very common in delirium) • Disorientation • Sleep-wake disturbance (worse at night → sundowning) 👉 Pathophysiology: • Diffuse brain dysfunction • Often due to: • Infection (UTI, pneumonia) • Metabolic disturbance • Drugs ⸻ 🔥 High-yield facts • Most common psychiatric emergency in elderly • Always assume organic cause until proven otherwise • Visual hallucinations > auditory • EEG: generalized slowing ⸻ ⚠️ Traps ❌ Schizophrenia → no fluctuating consciousness ❌ Lewy body dementia → chronic, not acute ❌ Depression → no impaired consciousness ⸻ 🎯 Examiner logic 👉 Keywords: “acute + fluctuating + confusion” = DELIRIUM

Answer 187

✅ Correct answer: C. Fluctuating consciousness 👉 Functional psychosis (e.g. schizophrenia): • Consciousness intact • Orientation preserved ⸻ 🔥 High-yield facts • Inattention = core cognitive deficit in delirium • Orientation impaired early • Psychosis = clear consciousness

Answer 188

✅ Correct answer: C. Lewy body dementia ⸻ 💡 Explanation 👉 Classic Lewy Body Dementia triad: • Visual hallucinations (well-formed, vivid) • Parkinsonism (rigidity, bradykinesia) • Fluctuating cognition 👉 Pathology: • Alpha-synuclein deposits (Lewy bodies) ⸻ 🔥 High-yield facts • REM sleep behaviour disorder = early sign • Severe sensitivity to antipsychotics • Attention fluctuates → can mimic delirium ⸻ ⚠️ Traps ❌ Delirium → acute onset ❌ Alzheimer’s → memory first, no early hallucinations ⸻ 🎯 Examiner logic 👉 Hallucinations + parkinsonism = LBD until proven otherwise

Answer 189

✅ Correct answer: C. Severe sensitivity reactions ⸻ 💡 Explanation 👉 LBD patients have extreme dopamine sensitivity → Giving antipsychotics = • Severe rigidity • Confusion • Neuroleptic malignant syndrome • Death ⸻ 🔥 High-yield facts • Up to 50% severe reactions • If needed → use: 👉 Quetiapine or Clozapine (low dose)

Answer 190

✅ Correct answer: C. Sodium 115 mmol/L ⸻ 🧠 Why this is correct (exam-focused) • Severe hyponatraemia (Na <120) ➡ Classic cause of delirium • Key features: • Acute confusion • Agitation • Seizures (if severe) ⸻ ❌ Why others are wrong • K 2.7 → weakness, arrhythmia (NOT delirium primary) • Urea 6 → normal-ish • Albumin 32 → mild ↓, not acute confusion • Hb 11 → mild anaemia → no delirium ⸻ 📌 Exam rule 👉 DELIRIUM = think sodium first (especially low Na) ⸻ 💣 High-yield facts 1. Hyponatraemia = most common metabolic cause of delirium 2. SSRIs + elderly → classic cause 3. Rapid correction → risk of central pontine myelinolysis

Answer 191

✅ Correct answer: A. Catatonia ⸻ 🧠 Why this is correct (exam-focused) • Catatonia = LIFE-THREATENING • Refusal to eat/drink • Immobility • Risk of DVT, dehydration ➡ ECT is first-line if severe or not responding to benzodiazepines ⸻ ❌ Why others are wrong • Hypomania → NOT indication • Delirium → treat underlying cause • Persistent delusion → NOT ECT indication • Personality disorder → NEVER ECT ⸻ 📌 Exam rule 👉 ECT = catatonia, severe depression, life-threatening states ⸻ 💣 High-yield facts 1. First-line for catatonia = lorazepam, then ECT if no response 2. Also used in: • Severe depression • Psychotic depression • Treatment-resistant cases 3. Rapid response → key indication

Answer 192

✅ Correct answer: C. Rivastigmine ⸻ 🧠 Why this is correct (exam-focused) • All are cholinesterase inhibitors (except aspirin/ginkgo) • Key issue = cardiac disease ➡ Rivastigmine: • Least cardiac interaction risk • Safer in: • Arrhythmias • Conduction problems ⸻ ❌ Why others are wrong • Donepezil / Galantamine → ↑ risk of: • Bradycardia • Heart block • Aspirin → not dementia treatment • Ginkgo → not evidence-based ⸻ 📌 Exam rule 👉 Cardiac disease + dementia → choose Rivastigmine ⸻ 💣 High-yield facts 1. Cholinesterase inhibitors → bradycardia risk 2. Rivastigmine often used in: • Parkinson’s dementia • Cardiac patients 3. Patch form → fewer GI side effects

Answer 193

✅ Correct answer: C. Donepezil ⸻ 🧠 Why this is correct (exam-focused) • Diagnosis = Vascular dementia ➡ Core principle: • Treat vascular risk factors • NOT cholinesterase inhibitors (unless mixed dementia) ⸻ ❌ Why others are correct (i.e. should be done) • Statins → secondary prevention • Diabetes control → essential • Smoking cessation → key risk reduction • Cognitive stimulation → supportive ⸻ 📌 Exam rule 👉 Pure vascular dementia → NO donepezil (Only if mixed Alzheimer’s → then consider) ⸻ 💣 High-yield facts 1. Vascular dementia = stepwise decline + infarcts 2. Management = risk factor modification 3. Donepezil only if: • Mixed picture • Alzheimer’s component

Answer 194

✅ Correct answer: D. Alzheimer’s disease ⸻ 🧠 Why this is correct (exam-focused) • Key clues: • Gradual progressive memory decline • Older age (80 years) • No mention of: • Fluctuations (DLB) • Stepwise decline (vascular) • Movement disorder (Huntington’s) ➡ Classic Alzheimer’s disease ⸻ ❌ Why others are wrong • Huntington’s → onset 30–50 + movement disorder • Lewy body → hallucinations + fluctuations • Vascular → stepwise decline • PSP → early falls, vertical gaze palsy ⸻ 📌 Exam rule 👉 Old age + progressive memory decline = Alzheimer’s ⸻ 💣 High-yield facts 1. APOE ε4 allele → ↑ Alzheimer’s risk 2. Huntington’s = CAG repeat (chr 4) + anticipation 3. Alzheimer’s = hippocampal atrophy

Answer 195

✅ Correct answer: C. Preserved functional independence ⸻ 💡 Explanation: 👉 The KEY difference: • MCI → cognitive impairment BUT function preserved • Dementia → functional impairment present MMSE alone does NOT define dementia ❌ ⸻ 🔥 High-yield facts: • Diagnosis of dementia requires functional decline • MCI may progress → dementia (~10–15% per year) • MMSE can be normal or mildly reduced in MCI

Answer 196

✅ Correct answer: D. Review for medical causes and environmental factors ⸻ 💡 Explanation: ALWAYS: 👉 First step in behavioural change in dementia = ➡️ exclude delirium / medical cause / environment ⸻ 🔥 High-yield facts: • Sudden change = think delirium • Common causes: UTI, pain, constipation, meds • Exams LOVE: “don’t jump to antipsychotics”

Answer 197

✅ Correct answer: B. Lorazepam ⸻ 💡 Explanation: 👉 If agitation is due to medical cause (delirium) → ➡️ Benzodiazepine (lorazepam) preferred NOT antipsychotic first ⸻ 🔥 High-yield facts: • Delirium → treat cause first 🚨 • Antipsychotics = for behavioural disturbance NOT primary medical agitation • Lorazepam safest benzo in elderly (no active metabolites)

Answer 198

✅ Correct answer: C. Anticholinergic effect ⸻ 💡 Explanation: Both drugs: 👉 Anticholinergic → delirium in elderly ⸻ 🔥 High-yield facts: • Elderly VERY sensitive to anticholinergics • Causes: confusion, urinary retention, dry mouth • “Hot, dry, blind, mad” mnemonic

Answer 199

✅ Answer: Alzheimer’s disease ⸻ 🧠 Explanation: Even in early-onset (<65): 👉 Alzheimer’s is still the most common cause overall Exam trap: • People assume FTD = most common under 65 ❌ • Actually: • Alzheimer’s still wins • FTD = second most common ⸻ 💎 High-yield pearls: • Early-onset Alzheimer’s: more aggressive more parietal involvement • Think: 👉 “Most common always = Alzheimer’s unless proven otherwise”

Answer 200

✅ Answer: Frontotemporal dementia (non-fluent variant PPA) ⸻ 🧠 Explanation: Key clues: • Effortful speech • Grammar errors • Phonemic paraphasia • Return of childhood stutter 👉 This is non-fluent primary progressive aphasia (nfvPPA) → strongly linked to FTD ⸻ ❌ Why not Alzheimer’s: • Alzheimer’s = memory first • Language comes later ⸻ 💎 High-yield pearls: • FTD = early personality OR language changes • Subtypes: Behavioural variant Semantic variant Non-fluent aphasia ⭐

Answer 201

✅ Answer: Creutzfeldt-Jakob disease (CJD) ⸻ 🧠 Explanation: Classic triad: • Rapid dementia • Myoclonus (jerks) • Ataxia “Jerky movements at night” = myoclonus ⸻ 💎 High-yield pearls: • CJD = rapidly progressive dementia • EEG: 👉 periodic sharp wave complexes • MRI: 👉 cortical ribboning

Answer 202

✅ Answer: Obsessive-Compulsive Disorder (OCD) ⸻ 🧠 Explanation: • Obsession: contamination • Compulsion: washing Classic OCD loop: 👉 anxiety → compulsion → temporary relief ⸻ 💎 High-yield: • Postpartum OCD = common • Insight often preserved

Answer 203

✅ Answer: Mirtazapine ⸻ 🧠 Explanation: This is depression in elderly with Alzheimer’s Why mirtazapine: • Improves: • sleep 😴 • appetite 🍽️ • weight ⸻ ❌ Traps: • SSRIs → fine but not best here • Antipsychotics → ❌ not indicated ⸻ 🔥 High-yield: 👉 “Depressed + weight loss + insomnia → MIRTazapine”

Answer 204

✅ Answer: Quetiapine ⸻ 🧠 Explanation: 👉 Parkinson’s disease psychosis Cause: • Dopamine excess from levodopa Treatment: ➡️ Quetiapine (least EPS risk) ⸻ ❌ Traps: • Haloperidol → 🚨 worsens Parkinson’s • Risperidone → EPS risk ⸻ 🔥 High-yield: 👉 “Parkinson’s + psychosis → QUETIAPINE” 👉 Clozapine = alternative but needs monitoring

Answer 205

**Previous Exam Question** ✅ Correct answer: Development of social networks ⸻ 💡 Explanation (examiner logic) 🔑 First, know the levels of prevention: 🟢 Primary prevention → Prevents illness before it occurs → Targets risk factors in the general population 👉 In old age: • Social isolation & loneliness = major risk factors for suicide • Therefore: ➡️ Building social networks = primary prevention ⸻ ❌ Why the other options are wrong 🔸 Treatment of depression with medication → Secondary / tertiary • Treats existing illness ⸻ 🔸 Crisis intervention and home treatment → Tertiary prevention • Managing acute risk ⸻ 🔸 Assessment after self-harm → Secondary prevention • Early detection after event ⸻ 🔸 Individual psychotherapy → Secondary/tertiary • Treats identified psychological distress ⸻ 🚨 High-yield prevention table (VERY exam favourite) 🟢 Primary • Reduce risk factors • e.g. social support, public health measures 🟡 Secondary • Early detection • e.g. screening, post-self-harm assessment 🔴 Tertiary • Reduce complications • e.g. crisis teams, treatment ⸻ 🧠 Exam Takeaway 👉 Primary = before illness → think population + risk factor reduction 👉 Old age suicide → think loneliness → social networks

Answer 206

✅ Correct answer: 👉 B. Schizoid ⸻ 🔍 Explanation (EXAM LOGIC) 👉 This is a forensic psychiatry pattern recognition question 💥 Elderly sexual offenders: • More likely: • Socially withdrawn • Isolated • Emotionally detached 👉 → Schizoid traits ⸻ ❌ Why others are wrong: • A. Paranoid ❌ → suspiciousness, not typical • C. Dependent ❌ → clingy, opposite profile • D. Antisocial ❌ → more common in younger offenders • E. Schizotypal ❌ → odd beliefs/perceptions, not main association ⸻ 💥 High-yield Paper B facts • Elderly offenders: 👉 more withdrawn + socially isolated • Younger offenders: 👉 more antisocial / impulsive ⚠️ Exam trap: 👉 If age = elderly → think schizoid / avoidant traits

Answer 207

✅ Correct Answer: C. Schizoid ⸻ 📖 Explanation (Examiner Logic) 👉 Schizoid personality traits are more common in elderly sexual offenders: • Social detachment • Emotional coldness • Preference for solitary activities • Limited intimate relationships 💡 This reflects: ➡️ Lifelong difficulty forming appropriate adult relationships ➡️ Possible shift toward deviant or substitute behaviours ⸻ ❌ Why others are wrong • A. Narcissistic → entitlement, but not typical here • B. Borderline → emotional instability (younger group) • D. Histrionic → attention-seeking, not typical • E. Avoidant → social anxiety, but not as strongly associated ⸻ 🧠 One-line takeaway 👉 Elderly sexual offenders → think SCHIZOID traits

Answer 208

✅ Correct answer: 👉 D. 10% ⸻ 🔍 Explanation • Parkinson’s disease → progressive cognitive decline • Annual incidence ≈ 10% per year ⸻ ❌ Why others are wrong: • 20–50% → too high for annual incidence • These may reflect lifetime prevalence, not yearly risk ⸻ 💥 High-yield facts • Lifetime dementia risk in PD → ~80% • Visual hallucinations = early clue • Lewy body pathology ⸻ 🎯 Takeaway 👉 PD dementia = 10% per year

Answer 209

✅ Correct answer: 👉 B. Plasma albumin ⸻ 🔍 Explanation 👉 Calcium exists as: • Bound (to albumin) • Free (active form) 👉 Total calcium depends on albumin level So: • Low albumin → falsely low calcium • High albumin → falsely high calcium

Answer 210

✅ Correct answer: 👉 B. Decrease the dose of donepezil ⸻ 🔍 Explanation 👉 Cholinesterase inhibitors (donepezil): • Dose-dependent GI side effects (nausea, vomiting, diarrhoea) 👉 First step = Reduce dose, not switch immediately ⸻ ❌ Why others are wrong: • A → only if intolerance persists • C → unsafe, symptoms significant • D → not first-line switch • E → worsens side effects ⸻ 💥 High-yield facts • Start low, go slow • Donepezil doses: 5 → 10 mg • Memantine = moderate–severe Alzheimer’s (different mechanism)

Answer 211

✅ Correct answer: 👉 A. He is self-sufficient and functioning independently ⸻ 🔍 Explanation (exam logic) 👉 ICD-10 dementia requires: • Decline in memory + thinking • Impairment in daily functioning • Clear consciousness • Duration ≥ 6 months 👉 If ADLs are intact → NOT dementia 💥 High-yield facts • Key requirement: functional impairment 🔥 • Duration ≥ 6 months (ICD-10) • Clear consciousness distinguishes from delirium

Answer 212

✅ Correct answer: 👉 C. Impaired attention ⸻ 🔍 Explanation 👉 Subcortical dementia (e.g. Parkinson’s, Huntington’s): • ↓ attention • ↓ processing speed • ↓ executive function • Apathy

Old age Flashcards

(236 cards)