Psychiatry Flashcards
What is ADHD?
It is characterised by 3 main symptoms of inattention, hyperactivity and impulsiveness
How is it defined by the DSM-IV and ICD-10 differently?
- DSM-IV recognises 3 subtypes of ADD, combined when all 3 features are present and just a hyperactive subtype
- ICD-10 definition is that symptoms should be present across time and situations for at least 6 months and starting before the age of 7
1% with ICD criteria and 5% with DSM-IV. It is 4 times more common in males
What are the risk factors for ADHD?
- 80% are genetically inherited
- Low birth weight
- Drug, alcohol or tobacco use pregnancy
- Head injury
- Genetic/metabolic disorders
What are the clinical features of ADHD?
Inattention: Careless with detail, fails to sustain attention, appears not to listen, fails to finish tasks, poor self-organization, loses things,
forgetful, easily distracted, and avoids tasks requiring sustained attention.
- Hyperactivity Most evident in structured situations, fidgets with hands or feet, leaves seat in class, runs/climbs about, cannot play quietly, ‘always on the go’.
- Impulsiveness Talks excessively, blurts out answers, cannot await turn,
interrupts others, intrudes on others.
What are some complications associated with ADHD?
Short term:
- Sleep
- Low self-esteem
- Family and peer relationship problems
Long term:
- Increased criminal activity
- Antisocial personality disorder
- Problems with getting jobs
What is ADHD assesed?
- Interview with family and child
- Observe the child in variety of environments
- Collateral information from school
- Rating scales
- Physical examination
What are the rating scales for ADHD?
- Strengths and difficulties questionnaire
- Connor’s rating scale
What are the medications used to treat ADHD?
- Methylphenidate: a CNS stimulant
- Atomoxetine
- Dexamphetamine:
What are some side effects of ADHD medication?
Headache, insomnia, loss of appetite, stomach ache, dry mouth, nausea
Can Can stunt growth
Need to Monitor weight, height and BP
Methylphenidate is Not recommended to take during pregnancy
What are the triad of symptoms that characterise autism?
- Abnormal reciprocal social interaction
- Communication and language impairment
- Repetitive repertoire of interests and activities
What is the prevalence of autism?
5-10 per 1000 individuals
Ratio of 3:1 boys to girls
What are the clinical features of autism?
- Abnormal social interactions: impaired non-verbal behaviour, poor eye contact, failure to develop peer relationships
- Abnormal communication or play: delay or lack of spoken language, difficulty in initiating or sustaining conversation
- Restricted interests or activities: Encompassing preoccupations and interests, adherence to non-functional routines or rituals, resistance to change
What are some neurological features of autism?
- Seizures
- Motor tics
- Increase head circumference
- Abnormal gaze monitoring
- Increased ambidexterity
What are some physiological features of autism?
- Intense sensory responsiveness
- Absence of typical response to pain or injury
- Abnormal temperature regulation
What are the rating scales for autism?
- Autism behaviour checklist
- Child autism rating scales
- Autism diagnosis observation schedule
What is bipolar disorder?
- Periods of depression and mania
What are the risk factors for bipolar disorder?
Genetic links and environmental stressors/triggers
- Hypothalamic-pituitary-adrenal axis abnormalities which are consistent with reduced HPA axis feedback
- Prolonged psychosocial stressors during childhood, such as neglect or abuse, are associated with HPA axis dysfunction in later life
- People with a history of sexual abuse or physical abuse appear to be more at risk and have a worse prognosis
What is a key question to ask someone presenting with depression?
Whether they have had manic or hypomanic episodes because treating bipolar as depression will cause the patient to become high
What is needed for a diagnosis of bipolar?
- Single episode of mania= Manic episode
- Two manic episodes= Bipolar disorder
What is the definition of a manic episode?
A distinct period lasting at least one week with 3 or more characteristic symptoms of mania:
- Elevated mood
- Increased energy
- Increased self-esteem
- Reduced attention
- Grandiose, overconfident, marked social/sexual disinhibited, reckless
- Severe impact on social functioning / poor or absent insight
- Could also have features of psychosis
What is hypomania?
Elated, overactive, social/sexual disinhibition, overspending, poor sleep
Continues to function
Partial insight retained
NO psychotic symptoms
Tend to last about 4 days
What is the management of acute mania?
- Atypical antipsychotics (Olanzapine/quetiapine)
- Semi-sodium valproate
What is used for long term mood stabilisation?
- Lithium
- Valproate
- Carbamazepine
What are the different types of bipolar?
Bipolar 1 - mania & depression, sometimes more episodes of mania
Bipolar 2 - more episodes of depression and only mild hypomania (easy to miss, always ask Sx of mania in person presenting with depression)