Psychiatry Flashcards
What are the SEs of antipsychotics?
Metabolic - weight loss and diabetes
EPS - akathisia, dyskinesia, dystonia
Cardio - long QT interval (especially in clozapine)
Hormonal - increase plasma prolactin as they are dopamine antagonist
Key side effect of clozapine
Long QT interval
What is treatment resistant schizophrenia?
Schizo does not respond to 2 different antipsychotics after trialing for 6-8 weeks each.
At least one drug should be non-clozapine second generation anti-psychotic.
Clozapine is treatment choice.
What are Schneider’s first rank symptoms?
1) Auditory hallucinations
2) Thought disorders:
- –Thought interruption
- –Thought insertion
- –Thought withdrawal
3) Thought broadcasting
4) Somatic Hallucinations
5) Delusional perception (“I saw the green light and knew I was the king”)
6) Feelings or actions experienced as made or influenced by external agents
What are the scoring systems for depression?
PHQ9
HAD scale
Treatment for mild depression
BioPsychoSocial
Watch and wait for 2 weeks, self-help, lifestyle advice (sleep hygiene)
Group CBT or computerised CBT
Treatment for moderate depression
BioPsychoSocial
Medication (review every 2 weeks for 3 months): SSRI first line (sertraline or citalopram)
High-intensity CBT: Individual CBT (16-20 session over 3-4 months) Interpersonal therapy (16-20 session over 3-4 months) IPT > CBT if depression due to death
Examples of SSRIs used in adults
Sertraline or Citalopram
Peroxitine - for really bad depression, Fluoxetine - for kids
Steps for medication in depression
1st line: SSRI (sertraline, citalopram, paroxetine, fluoxetine), 2 trials before 2nd line
2nd line: SNRI (duloxetine, venlafaxine)
3rd line: Antipsychotic, Lithium or other antidepressant eg.mirtazepine
4th line: ECT
Treatment for severe depression
BioPsychoSocial
Medication → ECT if necessary (catatonia)
High-intensity CBT: Individual CBT (16-20 session over 3-4 months) Interpersonal therapy (16-20 session over 3-4 months) IPT > CBT if depression due to death
What medication should be avoided with triptans?
SSRI
What anti-depressants are cautioned with warfarin or heparin?
NICE guidelines recommend avoiding SSRIs and using mirtazapine instead
What drug should NOT be prescribed with SSRIs and why?
Aspirin as can cause a haemorrhage
What else need to be prescribed with an SSRI?
Omeprazole or lansaprazole
A sick baby, with severe heart failure.
- Absent femoral pulses.
- Severe metabolic acidosis.
Suggestive of?
Duct dependant coarctation of the aorta
Who are the “sickest of all neonates” and how do they present?
Hypoplastic left heart syndrome
- profound acidosis and cardiovascular collapse
- weakness or absence of all peripheral pulses
Features of abnormal grief
Delayed
Lasting >6mths
Very intense
What are some physical causes of depression?
Cushing’s syndrome Hypothyroidism Addison’s disease Dementia Head injury Stroke MS
What are some of the biological symptoms of depression?
Sleep changes
Appetite changes
Weight changes
What are some of the cognitive symptoms of depression?
Memory deficits
Concentration deficits
List three classes of anti-depressants and give an example of each
SSRI – sertraline, citalopram, escitalopram, fluoxetine
SNRI – duloxetine, venlafaxine
NaSSA – mirtazapine
TCA – imipramine, amitriptyline
How is psychosis in depression different from psychosis in schizophrenia?
Psychosis is mood congruent in psychotic depression
Psychosis tends not to be mood congruent in schizophrenia as patients have blunted affect
What do you NOT give patients with lewy body dementia with visual hallucinations?
antipsychotics
What is the difference between type I and type II bipolar?
Type I: mania + depression
Type II: hypomania + depression
What is the difference between psychosis and mania?
Mainly differentiated via mood - mania is associated with elevated mood
What should be excluded in hyper sexuality?
Mania, substance misuse, organic brain disorders eg frontal lobe syndrome
Investigations for erectile dysfunction
- Full Hx (check for risk factors eg HTN, smoking, diabetes, Meds etc
- Check sex hormone and testosterone levels (may see low testosterone or hyperprolactinaemia)
- Check glucose
- Check LFTS/TFTS
What are some examples of paraphilias?
- fetishism
- paedophilia
- masochism
- sadism
Treatment for disorders of sexual identify
- hormone replacement therapy
- gender reassignment surgery
What does acamprosate do?
Enhances GABA transmission to reduce craving for alcohol (given after detoxification)
Uses of BDZs
Sedative Anxiolytic Muscle relaxant Hypnotic AnticonvulsAnt
Risks of using BDZ
Short: drowsiness, reduction in concentration
Long term: cog impairment, anxiety and depression, sleep disruption and dependence
Signs of BDZ use
Calm and mild euphoria
Slurred speech
Ataxia
Stupor
Signs of BDZ overdose
Respiratory depression (give IV flumazenil)
- low GCS
- low BP
- mydriasis
- hyporeflexia
Symptoms of withdrawal from BDZs
- ANXIETY
- insomnia
- irritability
- tachypnoea/cardia
- ataxia
- tremor, tinnitus, sweating
- hyperreflexia, seizures,
- palpitations, delusions, depressions
- derealisation, depersonalisation
- anterograde amnesia
What is naltrexone?
Antagonist of endorphins release from Etoh to reduce the high
What is disulfiram?
Second line for chronic management of alcoholism - irreversible inhibitor of acetaldehyde dehydrogenase - gives a really bad hangover
What are some features of lithium toxicity?
GI disturbance (diarrhoea and vomiting) Sluggishness + muscle weakness Ataxia Mild/gross tremor Fits Renal failure
What are some side-effects of anti-psychotics?
Extra-pyramidal: dystonia, akathisia, parkinsonism, tardive dyskinesia Hyperprolactinaemia (galactorrhoea) Weight gain Sedation Dyslipidaemia
What are Schneider’s First-Rank Symptoms?
Delusional perception
Passivity (they think someone else is controlling their actions)
Delusions of thought interference (insertion, withdrawal, broadcasting eg i think other people can hear what i’m thinking)
Auditory hallucinations (thought echo, 3rd person voices, running commentary)
What is a schizoid personality disorder?
Lack of interest in social or intimate relationships, difficulty with expressing emotions, and preferring a solitary lifestyle
Features of mania
Elevated mood/energy
Can get thought disorder (insertion, withdrawal broadcasting)
Delusions of grandeur
Flight of ideas
Cog symptoms: poor concentration and memory
In PACES: won’t be able to stop them talking
What are some features of lithium toxicity?
GI disturbance (diarrhoea and vomiting) Sluggishness Giddiness Ataxia Gross tremor Fits Renal failure
What are the side effects of Amitriptyline?
Constipation
Dry eyes and mouth
Headaches
What is the most common childhood ASD?
PDD-NOS - persuasive developmental disorder, not otherwise specified
What is dysthymia?
Persistent sub-threshold depression for at least 2years (between 2-5 symptoms, no functional impairment)
What are the subtypes of depression?
- SAD
- Atypical depression
- Anxiety-induced insomnia
- Agitated depression
- Depressive stupor
What are some risk factors for depression?
Biological:
- Genetics
- Neurochemical eg MA hypothesis
- Endocrine eg cortisol
- Illness eg cushings/hypothyroidism etc or indirect eg cancer
- Medication
Psychosocial
- Childhood experiences
- Vulnerability
- Life events
- Substance abuse
What is beck’s triad in depression?
Worthlessness
Hopelessness
Helplessness
What are the different types of BPAD and what is the diagnosis criteria?
BPAD 1: depressive + manic episodes
BPAD 2: more depressive episodes + some episodes of hypomania
Mixed cycling: mix of >4 episodes per year (respond to valproate well)
Mania: >3 characteristics (ICD-10), lasting at least 7 days, impairs social/occupational functioning, may have psychosis
SEs of valproate
Hair loss
Weight gain
Nausea
What are the teratogenic manifestations of mood stabilisers?
Lithium - Ebsteins anomaly
Valproate + Carbamazepine - spina bifida
Ddx for anorexia nervosa
Medical causes of weight loss Depression Bulimia nervosa Psychosis Eating disorder not otherwise specified (EDNOS) Body dysmorphic disorder (BDD)
What is the danger of food replacement in anorexia nervosa? What are the hallmarks of it?
Re-feeding syndrome - insulin release in response to food drives ions into cells leading to (low phosphate is the hallmark)
- hypokalaemia
- hypophosphataemia
- low Mg
- low thiamine
- salt and water retention
Symptoms: fatigue, weakness, confusion, high blood pressure, seizures, arrhythmia, heart failure
What are the 5 different types of schizophrenia?
- Paranoid
- Catatonic
- Hebephrenic
- Simple
- Residual
Basic management of Schizophrenia
1st line: atypical antipsychotic for 6 weeks eg low dose aripriprazole, high dose olanzapine, quetiapine, risperidone
2nd line: typical antipsychotic
3rd line: Clozapine (ie if treatment resistant
If non-compliant: once monthly depot injection
Psychological therapies:
- CBT
- fam therapy
- Concordance therapy
Social help: skill based, care based, fam etc
SEs of (atypical) antipsychotics
EPSEs:
- Dystonia
- Akathisia
- Parkinsonism
- Tardive dyskinesia
Other:
Prolactinaemia: amenorrhoea, gynaecomastia, hypogonadism, galactorrhoea
- weight gain (olanzapine&clozapine)
- anti-cholinergic symptoms: dry mouth, blurred vision, urinary retention, constipation, tachycardia
- sedation
- dyslipidaemia
- increased risk of diabetes (olanzapine)
- arrythmias
- seizures
- neuroleptic malignant syndrome
Investigations for schizophrenia
1) Hx and collateral Hx
2) Physical and OT assessment
3) urine MSU and toxicology screen
4) Bloods: FBC, TFTs, LFTs, Lipid, FG, CRP, U&Es
5) Consider HIV or syphilis screening
6) EEG? CT/MRI?
7) Social assessment
8) Screening of symptoms: Brief psychiatric rating scale
Differentials for schizophrenia
1) Organic: substance misuse, delirium, dementia, epilepsy, steroids, tumours
2) Acute/transient psychotic episode
3) Mood disorder
4) Schizoaffective disorder
5) Persistent delusional disorder
6) Schizotypal disorder
What are the 3 phases of schizophrenia?
- ARM: at risk mental state (or prodrome)
- reclusive, disinterest in activities - Active
- thought disorder, delusions, hallucinations, passivity phenomena - Passive
- negative symptoms: anhedonia, anergia, paucity of thought/speech, non-reactivity of mood, blunted affect, social withdrawal
What are Schneiders first rank symptoms?
(1) Delusions (false and fixed beliefs) (2) Passivity (delusions of control) (3) Thought disorder: • Thought insertion • Thought withdrawal • Thought broadcasting (4) Auditory disorder: • Thought echo • 3rd person voice • Running commentary
What is intoxication?
Transient state of emotional and behavioural change following drug use. Dependant on dose and time limited.
What is Harmful use?
Pattern of use likely to cause physical or psychological harm
What is drug dependency?
A cluster of physiological, behavioural and cognitive symptoms in which the use of substance takes on greater priority than other behaviours that once had greater value.
What 3 drugs does physical withdrawal occur from?
1) Etoh
2) BDZ
3) Opiates
What is withdrawal?
A transient state occuring while re-adjusting to lower levels of the drug in the body
What is a psychotic disorder?
Psychotic symptoms occurring during or immediately after use of a psychoactive substance, characterised by vivid hallucinations, abnormal effect, psychomotor disturbances, persecutory delusions and delusions of reference
What is amnesic disorder?
Memory and other cognitive impairments due to substance use eg Wernicke’s
What are residual and late onset psychotic disorders?
effects on behaviour, affect, personality or cognition lasting beyond the period during the which the direct effect of the psychoactive substance might be expected
What are the different types of dementia?
Most (75%) AD Vascular Lewy-body Fronto-temporal Mixed
What are lewy bodies made from?
alpha-synuclein with ubiquitin
What should you not do to manage a patient who is delirious?
Don’t sedate with BDZ or haloperidol
Don’t anti-cholinergic
What is prosopagnosia?
Difficulty in recognising faces (seen in AD)
What are some signs of frontal lobe damage? (Organic psych)
Poor judgement/planning Change in personality/mood/actions eg disinhibited behaviour Change in executive function Broca's aphasia + telegraphic speech Contralateral spastic hemiparesis Primitive reflexes reemerge
What are some signs of temporal lobe damage? (Organic psych)
Auditory impairment/agnosia
Wernicke’s aphasia
Auditory, olfactory, gustatory hallucinations
Lability
What are some signs of parietal lobe damage? (Organic psych)
Contralateral sensory impairment Apraxias Agnosias Contralateral sensory neglect Dyscalculia
What are some signs of occipital lobe damage? (Organic psych)
Contralateral visual deficits
Visual blindness
Visual agnosia
What condition affects the HTT gene?
Huntington’s - trinucleotide expansion disorder
Symptoms of Huntington’s disease
Movement: chorea, speech/swallowing, stumbling/clumsiness
Cognitive: organising tasks, flexibility, impulse control, learning new information
Psych: suicide risk, depression, irritability/mood swings
Triad of normal pressure hydrocephalus
Subcortical dementia
Urinary incontinence
Unsteady gait
Treat with ventriculo-atrial shunt
Causes of normal pressure hydrocephalus
Meningitis
Head injury
Idiopathic
What are prion diseases?
Progressive spongiform encephalopathies -> normal prion protein change to abnormal, insoluble form: accumulation leads to spongiform and amyloid changes
Most common = sporadic CJD
How may prion diseases present?
Loss of intellect and memory Changes in personality Loss of balance and coordination Slurred speech Progressive loss of motility/cognitive function
What are causes of amnesic syndrome?
Korsakoff syndrome: most common form
Hypoxia
Encephalitis
CO poisoning
What are the symptoms of amnesic syndrome?
Procedural memory is intact -> remember how to do things but ANTEROGRADE memory is lost ie patients can’t retain new information
Some patients may CONFABULATE to fill in the memory gaps
How may a patient with transient global amnesia present?
They remember their identity but may be bewildered as to where they are or have difficulty with anterograde memory - conciousness and cognition should be normal
- usually lasts only 1-24 hours and may be caused by emotional/physical stress or may be due to transient ischaemia of memory structure
How does executive dysfunction manifest?
1) Poor planning/decision making
2) Poor judgement
3) Poor reasoning/problem solving
What are the 3 cardinal features of frontal lobe syndrome?
1) Executive dysfunction
2) Social behaviour and personality change
3) Apathy
What are the two types of head injury?
- Open: penetration of skull causing direct damage to cerebrum
- Closed: no penetration = results from shearing forces/acceleration or deceleration
What is the triad of extrapyramidal symptoms?
1) Tremor (pill-rolling)
2) Rigidity (stiffness)
3) Bradykinesia
What is bradyphrenia?
Slowness of thought
What psych condition are 80% of parkinson’s cases associated with?
Dementia - but in PD the PD comes first, then dementia.
In LBD the dementia comes first then Parkinsonism symptoms.
Can treat with acetylcholinesterase inhibitors.
(NB: 40% of patients can also experience psychotic symptoms)
What are some secondary causes of Parkinson’s?
1) Drug-induced eg antipsychotics
2) Repeated infarcts/ischaemia
3) Repeated head injury eg chronic traumatic encephalopathy
4) Parkinsons plus syndrome eg PSP, CBGD, MSA, DLB
What psychiatric symptoms/problems may be seen in multiple sclerosis patients?
- Depression (50%)
- Cognitive impairment (60%) -> especially if late stages
What psychiatric problems may epileptic patients face?
1) Depression/suicide risk (4x higher than general population)
2) Cognitive impairment/ psychotic symptoms/ learning disabilities
Boy with conduct disorder is most likely to get what personality disorder when older?
Antisocial personality disorder