What does ADHD treatment rely on predominantly ?
Relies on precribing stimulant medications of which methylphenidate is most widely used.
ADHD?
Attention deficit hyperactivity disorder (ADHD) is a disorder that
manifests in childhood with symptoms of
* Hyperactivity
* Impulsivity
* Inattention
ADHD Neurotransmitter deficiencies?
Neurotransmitter differences particularly in levels of dopamine, norepinephrine, epinephrine and serotonin.
Dopamine and Norepinephrine roles?
Dopamine has been associated with approach and pleasure-seeking behaviours
Norepinephrine plays a role in emotional/behavioural regulation
What are additional related conditions with ADHD?
Cure for ADHD?
No cure for ADHD, currently available treatments may help reduce symtoms
Commonly used medication for ADHD?
ADHD MOA?
Blocking the re uptake of NOR and DOP and facilitating their release. Enables NOR and DOP availability in certain brain regions: PFC and basal ganglia
ADHD Psychosocial intervention?
Pharmacotherapy of ADHD?
My Moods Can Attain
Atomoxetine MOA?
Selective Norepinephrine Reuptake inhibitor (NRI) Also, it increases pre‐frontal dopamine release
Atomoxetine T1/2?
Short t1⁄2, high plasma protein binding, metabolised by hepatic enzymes
Atomoxetine Indications?
ADHD in children, adolescence and adults
Atomoxetine S/E?
GI upset, dry mouth, headache, palpitation, insomnia, sweating,
Pruritis
Atomoxetine CI?
GI upset, dry mouth, headache, palpitation, insomnia, sweating,
Pruritis
Atomoxetine Trade?
Methylphenidate MOA?
Norepinephrine–Dopamine Reuptake inhibitor (NDRI)
Methylphenidate Chemical Structure?
Methylphenidate Half-life
Short t1⁄2, extensive 1st‐pass metabolism, hepatic metabolism
Methylphenidate I?
ADHD, narcolepsy
Methylphenidate CI?
glaucoma, hyperthyroidism, glaucoma, cardiac disease, Tourette’s syndrome (inherited neuropsychiatric disorder)
Methylphenidate Trade?
Trade: Ritalin® | Concerta®
Methylphenidate S/E?
headache, dyskinesia, arrhythmia, urticaria, hair loss, blood dyscrasias (anaemia, leucopoaenia,thrombocytopaenia), convulsion
Modafinil MOA?
Unclear precise mechanism of action:
oDopamine transported blocker (DAT)
oD2 receptor partial agonist