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ICC-2 Psych — Psychological Treatment

Reference · psychological therapies + personality disorders · derived from TheStudyFix Year 3 ICC-2 VM [162-163] Psychological Treatment deck

C/P
Inves
Mng
Special — pathognomonic

Personality Disorder

1 entries
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Borderline Personality Disorder (BPD)

Core features

  • Onset childhood/adolescence into adult life; enduring + pervasive
  • Affective instability (rapid intense responses, slow return to baseline); impulsivity; self-destructive/para-suicidal behaviour
  • Intense unstable relationships; frantic efforts to avoid abandonment
  • Cognitive: paranoia, quasi-psychotic experiences, depersonalisation
  • Impulsivity forms: self-harm, alcohol/drugs/food/overdose, eating disorders, promiscuity, spending
  • Self-harm: cutting, burning, mutilation, piercing, scarification; para-suicidal: overdose, blood-letting, self-stabbing

Presents / epidemiology

  • A&E post-self-harm · admission after interpersonal crisis · GP requesting sedatives/antidepressants · surgery for self-mutilation repair
  • Prevalence: general 1% · psychiatric outpatients 10% · inpatients 20% · forensic 70%

Aetiology

  • Biological factors + early attachment relationship + subsequent experiences/trauma
  • Secure attachment → attuned caregiver metabolises distress → stable sense of self + affect regulation
  • Failed attachment → disorganised pattern → unstable self; non-metabolised distress displaced onto body (self-harm) or projected into relationships

Management

  • Mainstay psychological; structured programme in specialist PD service; brief interventions CONTRA-INDICATED; watch transitions, splitting, acting-out
  • DBT (1990s, Linehan; from behaviour therapy) — targets problematic behaviours only (cutting/overdose), NOT emotions/interpersonal; best for impulsive self-harming women
  • MBT (2004, Bateman & Fonagy UCL; from attachment theory) — targets thoughts/feelings of self + others
  • Both DBT + MBT: individual + group, 18–24 months, NICE-recommended
  • Prognosis: 10% suicide, rest gradually improve

Special

  • Projective identification — emotional conflict projected → becomes interpersonal conflict others find themselves in
  • Counter-transference hatred — clinicians drawn into rows / derogatory or sadistic care / no anaesthetic before suturing self-harm / inappropriate sedative prescribing

Psychological Therapies

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Psychological Treatment — NHS Overview

Approaches & context

  • 8 common MH problems: anxiety · depression · PTSD · OCD · psychosis/schizophrenia · bipolar · somatoform · personality disorders
  • Providers: psychologist · psychotherapist · psychiatrist · psychological practitioners · IAPT high/low-intensity workers
  • Contexts: IAPT + secondary care · Formats: individual/group/family/consultation · needs motivation to engage
  • 3-stage structure: assessment → formulation → treatment/intervention
  • 3 main approaches practised in NHS: systemic · CBT · psychodynamic
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Formulation

  • Butler (1998): the tool relating theory to practice — 'hypotheses to be tested'
  • All formulations (Johnstone & Dallos 2006): summarise core problems · relate difficulties to one another · use theory to explain development/maintenance (triggers, situations, maintaining factors) · indicate intervention plan · open to revision
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Cognitive Behavioural Therapy (CBT)

Theory

  • Beck's cognitive theory; early childhood → schemas/core beliefs about self, others, world
  • Schema = cognitive framework organising/interpreting info; critical event → unhelpful thinking + negative automatic thoughts → affect feeling + behaviour
  • Longitudinal (Beck): schemas = categorical ('I am unlovable') → assumptions = conditional → critical incident → activated schemas → NATs → emotions/behaviours/bodily sensations
  • Vicious cycle: attempts to solve a problem inadvertently maintain it

Method

  • Individual/group · time-limited 8–20 sessions · collaborative · active (out-of-session work) · assess → formulate → intervene

Techniques

  • Sharing the formulation (treatment rationale) · Socratic questioning · thought diaries · thought challenging (evidence) · behavioural experiments · homework ('client becomes their own psychologist')

Evidence

  • Most developed evidence base of all therapies (Cochrane 2009)
  • NICE-recommended: depression (2009), schizophrenia (2009), anxiety (2011), eating disorders (2004), bipolar (2006)
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Psychodynamic Psychotherapy

Key concepts

  • 5 concepts: unconscious · free association · defences · transference · development

Freud's models

  • Topographical: unconscious (repressed wishes, pleasure principle, slips/dreams) · preconscious · conscious
  • Structural: Id (from birth, unconscious, pleasure/instincts) · Ego (age 1, largely conscious, defences) · Superego (age 5–6, unconscious, morals/values)

Contributors

  • Bowlby (attachment theory) · Bion (container-contained) · Jung (analytical psychology — introvert/extrovert, archetypes, complex) · Winnicott (good-enough mother, transitional object)

In practice

  • Setting · exploration · interpretation · transference; links made: conscious↔unconscious (defences), therapist↔patient (transference), inner↔outer reality → symptom relief + wellbeing
  • Interpretation (verbal): identify defence · identify feeling · address feared consequences · use of transference · counter-transference
  • Formats: individual/couples/groups/systems; derived modalities: MBT, interpersonal therapy, organisational consultancy

Eating Disorders

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Anorexia Nervosa

Clinical features

  • Compulsive need to control eating + body shape (both sexes); weight loss becomes an over-valued idea (feels "fat" even when very underweight)
  • Females want to be "thin"; males want high muscle mass rather than thinness; shape "achieved" by food refusal → over-exercise, induced vomiting, laxative abuse
  • Perfectionism, poor concentration/exhaustion, intolerance of cold, inflexible thinking
  • Secretive/changed eating + exercise (calorie counting, refuses food when upset), obsession with weight, makes food for others, tension with others (believes nothing is wrong)

Starvation — whole-body effects

  • Brain: poor thinking/memory, fear of weight gain, low/irritable mood, fainting
  • CVS: low BP, bradycardia, palpitations, heart failure
  • Bloods: anaemia; low potassium, magnesium, sodium
  • MSK: weak muscles, swollen joints, fractures, osteoporosis
  • Renal: kidney stones, kidney failure · GI: constipation, bloating
  • Endocrine: periods stop, bone loss, reduced fertility (pregnancy → ↑ miscarriage, C-section, low birthweight, postpartum depression)
  • Skin: easy bruising, dry skin, fine hair growth all over body, cold intolerance, yellow skin, brittle hair/nails

Investigations / assessment

  • Physical risk stratification — BMI, weight-loss rate, BP, pulse, postural BP drop, squat test, temperature (→ Medium- vs High-risk; see Criteria tab)
  • Bloods: potassium (hypokalaemia → arrhythmia / seizures) + electrolytes
  • ECG: prolonged QT (arrhythmia risk)

Management

  • Mild: support, self-help books, food diary; refer to specialist if no improvement; explore comorbidities (depression, ASD); physical health = priority; do not allow disengagement (often in denial)
  • Restore nutrition: weight gain 0.5–1 kg/week (~3,500–7,000 extra kcal/week); aim final BMI 20–25; treat starvation + refeeding complications
  • Family-based treatment (FBT) > individual — conjoint (CFT) or separated (SFT) family therapy; Maudsley model → full recovery up to 90%
  • Individual therapy usually ACT (acceptance & commitment therapy, a type of CBT); involve family/carers (avoid blame)
  • Hospital admission per weight/severity; CAMHS referral in adolescents

Special

  • Types — Restricting (dieting/fasting/exercise, no binge-purge in last 3 mo) vs Binge-eating/purging (recurrent binge/purge in last 3 mo)
  • Cognition worsens as BMI falls (see BMI–brain table); serotonin dysregulation + 55% concordance in monozygotic twins
  • Prognosis: ⅓ recover fully, ⅓ improve, ⅓ chronic; 5% die (suicide or medical — hypokalaemia + prolonged QT → arrhythmias); median diagnosis→death ~11 years
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Bulimia Nervosa

Clinical features

  • Recurrent binge eating + inappropriate compensatory behaviours (self-induced vomiting, laxatives, diuretics, enemas, excessive exercise)
  • Self-evaluation unduly influenced by body shape; often normal weight
  • Social isolation, avoiding relationships (pressure to eat / exhaustion), excessive time in bathroom after eating

Complications (severe)

  • Vomiting → kidney damage; oesophageal damage (incl. sore throat); bowel damage
  • Dental: tooth erosion, decay, bad breath; swollen salivary glands; hormonal changes
  • Potassium disturbance → heart-rhythm changes / seizures; weakness, tiredness

Management

  • Treat medical complications (e.g. of vomiting)
  • Antidepressant for binges/purging — first-line SSRI (fluoxetine) at a higher dose than for depression: 60 mg
  • Consider CBT rather than family therapy

Special

  • Prognosis: over 2–10 years, 50% recover, 20% no change; mortality higher with delayed treatment or predominantly vomiting
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Binge Eating Disorder (BED)

Clinical features

  • Recurrent binge eating (≥1×/week for 3 months): large amount of food in a discrete period (e.g. ≤2 h) + loss of control
  • Eating rapidly, when not hungry, until uncomfortably full; eating alone from embarrassment; guilt afterward; marked distress

Special

  • Unlike other EDs, no compensatory behaviour → does not prevent weight gain, so obesity is common
  • Comorbid with depression, low self-esteem, boredom
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Refeeding syndrome

Clinical features

  • Potentially fatal; follows rapid reintroduction of food after ≥10 days of undernutrition
  • Signs: rhabdomyolysis, respiratory failure, low BP, arrhythmias, seizures, sudden death

Investigations

  • Monitor serum phosphate (stop refeeding if falling); also watch rising glucose or falling potassium

Management

  • Dietician-led slow refeeding, cautious calorie increase over 4–7 days
  • Milk often used initially (phosphate-rich, well tolerated)
  • Prescribe thiamine, strong vitamin B complex, and a multivitamin

Special

  • Caused by decreased blood phosphate (hypophosphataemia)

Induction (OSCE / liaison)

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Psychiatric history & interview (OSCE)

BATHE technique

  • Background · Affect · Trouble · Handling · Empathy

Brief psychiatric history — structure

  • Complaint: patient's own words (spontaneous + on questioning); informant if available & consented
  • HPC: onset / course / duration, nature of problem, frequency / timing, precipitating / aggravating / relieving factors, treatment taken & response — then screen for other psychiatric symptoms
  • Past psychiatric history: previous diagnoses / episodes, admissions, treatments that did & didn't work (medications, psychotherapy, ECT), any deliberate self-harm (DSH) / suicide attempts
  • Past medical history: esp. vascular risk factors (diabetes, hypertension, cholesterol), fever admission, significant head trauma, surgery
  • Medications: type / dose / frequency, route (oral or depot injection), allergies; OTC — vitamins, analgesics, supplements, herbal
  • Family history: medical / psychiatric — esp. epilepsy, intellectual disability, criminality, substance misuse, morbid religiosity, suicide
  • Substance history (see below)

Substance history

  • Substances: smoking (cigarettes / cigars / pipe / shisha), alcohol (units/week), illicit — cannabis, opiates (heroin, tramadol), stimulants (cocaine, amphetamines), hallucinogens (LSD, ecstasy, MDMA)
  • For misuse: when started, most at heaviest, periods of abstinence, current amount & cost, ever injected (HBV / HIV risk + tests), blackouts / withdrawal, does the patient see it as a problem?

Adapting to the patient

  • Talkative → "out of all these problems, what is the most troublesome for you?"
  • Silent → structured questions to open them up; reassure they have coped so far, then explore their coping strategies

Descriptive psychopathology

  • Phenomenology — observation & categorisation of abnormal psychic events without embellishing with cause or function; empathic evaluation of the patient's subjective experience
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Screening & sensitive questioning (OSCE)

NICE depression screen (2 questions — mood + interest)

  • "During the last month, have you often been bothered by feeling down, depressed or hopeless?"
  • "During the last month, have you often been bothered by having little interest or pleasure in doing things?"

Asking about mood

  • "Have you been feeling sad or tearful?" · "Could you tell me more about that?" · anything you've been able to enjoy over the last couple of weeks? · ways of keeping your spirits up in hospital?

Asking about anxiety

  • "Have you been feeling anxious?" · tell me more about those worries · how long · how has it affected you · what coping techniques do you have when stressed?

Asking about sleep

  • Enough sleep? how many hours? continuous or interrupted? struggle to get to sleep? ever wake very early and can't get back?

Asking about self-harm & suicide

  • Emotive — find your own wording, e.g. "Sometimes when people feel particularly stressed, worried or low, they can have thoughts of harming themselves or ending their lives — has this ever happened to you?" then "If it did, who could you talk to about it?"

Technique

  • Socratic questioning (shared critical thinking): clarify their thinking, challenge assumptions, request evidence, explore implications, question the question
  • Normalising: to elicit ("some patients tell me this can be frightening") or reassure ("that's a very common experience"); a symptom is more likely a disorder if intense + persistent
  • Balance open & closed questions; psychiatric symptoms are subjective (pain, fatigue, worry, panic) → need description + empathy, not a rigid SOCRATES
  • Don't read a fixed verbatim list; judge mood (cheerful / downcast / withdrawn) and adapt; be curious not invasive; avoid jargon; be human
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Depression & anxiety — symptoms

Depression — symptoms

  • Core: low mood (diurnal variation), loss of interest / enjoyment, fatigability
  • Psychological: poor concentration, low self-esteem, guilt, pessimism
  • Somatic: sleep disturbance (esp. early-morning waking), anorexia + weight loss, loss of libido

Anxiety — symptoms

  • Psychological: fear / "impending doom", restlessness, dizziness / faintness, exaggerated startle, poor concentration, irritability, insomnia / night terrors, depersonalisation / derealisation, globus hystericus
  • Physical (autonomic arousal, hyperventilation, muscle tension): CVS — tachycardia, palpitations, chest pain; GI — dry mouth, globus, nausea, abdominal pain, loose stools; Resp — SOB, chest tightness; GU — frequency, erectile dysfunction, amenorrhoea; Neuro — tremor, headache, muscle pains, paraesthesia

Classification

  • Anxiety disorders: PTSD · panic disorder · OCD · GAD · phobias
  • Mood disorders: depression (dysthymic, major) · bipolar (I, II, cyclothymic)
  • Major psychiatric diagnoses: schizophrenia, bipolar, depression, dementias, learning difficulties, personality disorders, substance misuse
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Liaison psychiatry

Definition

  • The link / connection — psychiatrists providing psychiatric care to medical patients; psychiatry = diagnosis + management of disorders of mental function (cf. psychologists, psychoanalysts, psychotherapists)

Scale of the problem

  • >1/4 of hospital patients have a mental disorder; 2/3 of beds are older people, of whom ~60% have or develop a mental-health condition — most often dementia, delirium, depression
  • Comorbid mental + physical illness: often undiagnosed, ↑ morbidity / mortality, ↓ quality of life, poorer pain control, ↓ treatment compliance, ↑ healthcare use, may mask physical problems, stigma
  • Under-recognition: >half of depression in general hospitals is missed — symptom overlap, normalisation, stigma, time constraints, physician reluctance to ask

4 ways psychiatric symptoms occur with medical disease

  • Direct result of physical disease · psychological reaction to disease · psychiatric disorder → physical symptoms · psychiatric disorder presenting as a physical disorder

Scope of liaison psychiatry

  • Psychological reaction to illness, delirium, dementia, disturbed behaviour, self-harm, substance use, medically unexplained symptoms, capacity, severe mental illness / psychosis, perinatal psychiatry
  • Illnesses treated: functional / non-organic, organic, learning disability, personality disorders; classifications used — ICD-10 & DSM-5
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Psychological impact of physical illness

Reaction to illness

  • ~1/4 of people with a physical health problem develop psychological problems
  • Driven by: loss of identity / role, loss of function, lifestyle change / disability, dependency on others, impaired relationships, deterioration / threat to life, impact on body image + self-esteem
  • Factors influencing response: illness perception, coping strategies, personality; illness type (↑ psychiatric morbidity with more pain, advanced disease, high disability, brain-affecting neuro disorders); therapeutic setting

Adjustment disorder

  • Onset within 1 month of an identifiable (non-catastrophic) psychosocial stressor
  • Depressed or anxiety reaction (or conduct disorder in children)
  • Usually resolves <6 months after the stressor ends (unless a prolonged depressive reaction)

Adjustment disorder vs onset of mental illness — red flags for mental illness

  • Persistent / extreme / disabling mood change, bizarre symptoms (psychosis, aggression), maladjustment to illness, suicidality, physical function poorer than expected, slower recovery than expected, poor social interaction

Kübler-Ross grief / change curve

  • Shock → numbness → denial → fear → anger → depression → understanding → acceptance → moving on
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Psychiatric presentations in medical illness

General rule

  • Diabetes / hypertension / CAD → ×2 depression (+ vascular dementia risk); COPD / cerebrovascular / other chronic → ×3; ≥2 chronic conditions → ×7 more likely to have mental-health problems

By condition

  • Cardiac (CAD): ~20% clinically significant depression post-MI or at cardiac catheterisation; depression in CVD 17–27%; comorbid depression → more cardiac complications
  • Diabetes: depression ~9% (×2) → poorer glycaemic control, complications, ↑ death; needle phobia; insulin misused for weight loss; insulin overdose risk
  • COPD: ×2.5 depression / anxiety (worse if hypoxic / dyspnoeic), up to 50%; panic common — "suffocation false alarm" (brainstem chemoreceptors, lactate) + hyperventilation → hypocapnia → anxiety; catastrophic cognitions; steroids → psychosis / depression
  • Cancer: depression / anxiety / adjustment / delirium common; can present psychiatrically — brain tumours (1° / metastatic), small-cell lung, pancreatic (insulinoma → neuropsychiatric, misdiagnosed as psychosis / depression); head & neck cancer → high suicide
  • SLE: depression / anxiety (rarely psychosis); CNS — seizures, chorea, cognitive impairment, stroke
  • Multiple sclerosis: depression 40–50% (×3), ↑ suicide; SSRIs first-line; ECT ~20% relapse risk; steroid-induced mania / depression (also baclofen, dantrolene, tizanidine)
  • Stroke: post-stroke depression (mean ~34 weeks), more with basal-ganglia / left-hemisphere infarcts; screen within the first month; treat emotionalism with antidepressants, continue ≥4 months
  • Epilepsy: depression 30–50%, panic ~20%, esp. TLE; high suicide (×25 with depression); SSRIs first-line; avoid lithium (lowers seizure threshold); post-ictal psychosis; pseudoseizures

Physical health of the mentally ill

  • Schizophrenia / bipolar die 16–25 years earlier; ↑ respiratory, cardiovascular, infectious disease, obesity / dyslipidaemia / diabetes
  • Schizophrenia: diabetes 10% → 20–25% at 60+; smoking 70% of inpatients (vs 21% general population)
  • Depression itself: ×2 lifetime type-2 diabetes risk; independent risk factor for heart disease + stroke (psychotropic drug side-effects → see Psychopharmacology card)

Concepts

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Defence mechanisms

  • Immature (Melanie Klein): denial · projection · idealisation/denigration → splitting · projective identification
  • Neurotic: regression · intellectualisation · displacement · rationalisation · reaction formation
  • Mature: suppression · sublimation · altruism · humour
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Transference & counter-transference

  • Transference = displacement of feelings from a past relationship onto the therapist
  • Counter-transference = therapist's transference onto the patient from own past experience

Reference

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Freud's psychosexual stages

  • Oral 0–1.5 y (fixation → immediate gratification, e.g. smoking)
  • Anal 1.5–3 y (obsessive/messy)
  • Phallic 3–5 y (Oedipal complex; gender identity)
  • Latency 5–11 y (socialisation)
  • Genital puberty+ (sexual dysfunction/relationship problems if fixated)
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NICE CBT indications

  • Depression (2009) · schizophrenia (2009) · anxiety disorders (2011) · eating disorders (2004) · bipolar (2006)

Psychopharmacology

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Psychopharmacology — Drug Classes

Prescribing principles (all classes)

  • Establish a diagnosis + identify target symptoms to monitor response; pick an agent by side-effect profile; use the lowest effective dose
  • Informed consent (benefits/risks; document teratogenicity discussion in fertile women); run a monitoring programme (compliance, side effects, target-symptom response, blood levels/tests); keep the simplest effective regimen

1. Antipsychotics

  • Indication: psychosis/schizophrenia — start promptly (delay worsens negative symptoms); part of an individualised plan with psychosocial support; depot (long-acting injection) if concordance is poor
  • Mechanism: block/partially block dopamine D2 receptors in the mesolimbic area; all show D2 antagonism (drives efficacy)
GenerationReceptor actionExamplesTrade-off
1st (FGA, typical)D2 antagonistHaloperidol, trifluoperazineEPSE (nigrostriatal D2 block)
2nd (SGA, atypical)5-HT2A + D2 antagonistClozapine, olanzapine, quetiapine, risperidoneLess EPSE, more metabolic SE
3rd (TGA)Dopamine partial agonistAripiprazole (first), brexpiprazole, cariprazine, lumateperone—
  • Neurological SE (esp. FGA): acute dystonic reaction (emergency); parkinsonism (rigidity, bradykinesia, tremor); akathisia (emergency — restlessness); tardive dyskinesia (prolonged use — involuntary face/mouth/tongue movements); neuroleptic malignant syndrome (emergency — fever, muscle rigidity, tachycardia, CK >1000)
  • Non-neurological SE: anticholinergic (dry mouth, blurred vision, constipation, urinary retention); arrhythmia; orthostatic hypotension; weight gain (antihistaminic); raised prolactin (impotence, amenorrhoea)
  • Newer drugs: weight gain, sexual dysfunction (raised prolactin), postural hypotension + long QTc, daytime drowsiness; clozapine → agranulocytosis/neutropenia (mandatory FBC monitoring) + myocarditis/cardiomyopathy

2. Antidepressants

  • Indication: major depression (esp. relapse prevention); CBT is as effective as drugs in mild–moderate, combined is best; warn of initial worsening before benefit; full efficacy takes ~6 weeks; monitor suicidality early; assess formally at ≥4 weeks; if effective continue ≥6 months after recovery (stopping early → 50% relapse)
  • Mechanism: raised synaptic neurotransmitter → receptor desensitisation/down-regulation + gene-expression changes → clinical effect after weeks; SSRIs block serotonin reuptake
  • Response: switching > augmenting; little dose–response evidence — don't just keep increasing the dose; switch class if no response by 4 weeks
ClassExamplesNotes
SSRI (first-line)Fluoxetine, citalopram/escitalopram, sertraline (best in IHD)Low start, titrate; monitor FBC (GI bleed — avoid NSAIDs) + U&E (hyponatraemia); citalopram → dose-dependent QTc prolongation (ECG; Torsades risk)
NaSSAMirtazapineDrowsy at low dose → useful as evening dose to aid sleep
SNRIVenlafaxineMixed anxiety; needs baseline BP + ECG (CVS effects)
TCA (4th line)Nortriptyline, clomipramineOlder; dangerous in overdose
MAOI (4th line)MoclobemideOlder; rarely used

Lithium is an effective adjunct but has significant toxicity. Common antidepressant SE: nausea, weight gain, sexual dysfunction, fatigue/drowsiness or insomnia, anticholinergic effects.

3. Mood stabilisers

  • Indication: bipolar affective disorder (acute mania / depressive episode / prophylaxis); only ~1/3 respond to monotherapy. Onset: lithium ≥1 week; valproate + antipsychotics (olanzapine, aripiprazole) act faster in acute mania (bridge with antipsychotics/sedatives until the stabiliser works)
AgentMechanismKey side effects / cautions
LithiumSignal transduction (2nd-messenger enzyme inhibition, G-protein modulation, GSK3 inhibition)Narrow therapeutic index — monitor levels; GI, polyuria/polydipsia, lethargy, weight gain, tremor, acne, oedema (Na retention), hypothyroidism/goitre; avoid dehydration (→ toxicity, fatal if unchecked)
Sodium valproateBlocks Na channels + raises GABAFirst-line (esp. mixed/rapid-cycling); teratogenic (spina bifida, cardiac, cleft lip) → avoid in women of childbearing age; sedation, tremor, headache, weight gain, lipid dysregulation, alopecia
CarbamazepineBlocks Na channels (↓ glutamate)Acute mania + prophylaxis (efficacy < lithium); GI, sedation, ataxia, severe bone-marrow depression; hepatic P450 induction → fails OCP + warfarin
LamotrigineNa-channel antagonist (↓ glutamate)Better for bipolar depression; life-threatening skin reactions incl. Stevens-Johnson (first 2–8 weeks or on abrupt stop–restart)

4. Anxiolytics

  • Indication: panic disorder, GAD, substance withdrawal, insomnia/parasomnias; often combined with an SSRI/SNRI in anxiety disorders
  • Benzodiazepines — insomnia, parasomnias, anxiety; SE somnolence, amnesia, disinhibition; dependence + tolerance → use sparingly, short-term only
  • Beta-blockers (propranolol) — improve somatic anxiety (tremor, sweating; e.g. public speaking); do not help cognitive anxiety
  • Buspirone — GAD; high-affinity 5-HT1A agonist (not GABA); non-sedating; takes ~4 weeks; not for acute anxiety/panic

Compliance

  • No improvement → check efficacy/tolerance, rethink the diagnosis, check drug–drug interactions, and confirm the drug is actually being taken
  • Reasons for non-compliance: side effects seen as worse than the illness, stigma, medication as a reminder of being ill, belief that it doesn't work

Eating Disorders

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Diagnostic criteria — Anorexia, Bulimia, BED

Anorexia Nervosa

  • Restriction of energy intake relative to requirements (→ low body weight)
  • Intense fear of gaining weight / being fat, OR persistent behaviour that interferes with weight gain
  • Disturbed experience of body weight/shape, OR lack of recognition of the seriousness of low body weight
  • Types: Restricting (dieting, fasting, excessive exercise; no binge/purge in last 3 mo) · Binge-eating/purging (recurrent binge or purge in last 3 mo)

Bulimia Nervosa

  • Recurrent episodes of binge eating
  • Recurrent inappropriate compensatory behaviours (purging, laxatives, diuretics, enemas, excessive exercise)
  • Binge + compensatory behaviour both occur ≥ once a week for 3 months
  • Self-evaluation unduly influenced by body shape

Binge Eating Disorder

  • Binge eating ≥1×/week for 3 months: large amount in a discrete period (e.g. ≤2 h) + loss of control
  • Associated: eating rapidly, when not hungry, until uncomfortably full, eating alone from embarrassment, guilt afterward
  • Marked distress; no compensatory behaviour (→ obesity common)
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OSFED & other feeding/eating disorders

OSFED (Other Specified Feeding or Eating Disorder)

  • Formerly EDNOS (Eating Disorder Not Otherwise Specified); renamed 2017; used when full diagnostic criteria are not met
  • Atypical Anorexia Nervosa: AN features but weight remains within normal range despite significant weight loss
  • Atypical Bulimia Nervosa: sub-threshold BN (e.g. below the frequency criterion)
  • Purging Disorder: purging aimed at weight loss without binge eating
  • Night eating syndrome: recurrent night eating after waking from sleep

Pica

  • Persistent eating of nonnutritive, nonfood substances for ≥1 month

Rumination disorder

  • Repeated regurgitation of food for ≥1 month; food re-chewed then re-swallowed or spat out
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Anorexia — physical risk stratification

ParameterMedium riskHigh risk
BMI<14 kg/m²<12 kg/m²
Weight loss>0.5 kg/week>1 kg/week
Systolic BP<90<80
Diastolic BP<70<60
Pulse>110 or <50>120 or <40
Postural drop>10 mmHg>20 mmHg
Squat testDifficulty getting upUnable to get up without arms as levers
Temperature<35 °C<34.5 °C
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BMI & health

BMI cutoffs (women / men)

WomenMenInterpretationRisk to health
<19.1<20.1Underweightlower the BMI, greater the risk
19.1–25.820.7–26.4Ideal weightnormal, very low risk
25.8–27.326.4–27.8Marginally overweightsome risk
27.3–32.227.8–31.1Overweightmoderate risk
32.3–44.831.1–45.4Obesehigh risk
>44.8>45.4Morbidly obesevery high risk

Effect of BMI on brain functioning

BMIBrain functioning
17–2025% of thinking relates to food / "safety" behaviours
15–1760% of thinking
13.5–1580% of thinking
12–13.590% of thinking
<1295% of thinking; lapses of attention or confusion

Starvation impairs self-regulation → reduced social cognition, emotional dysregulation, impaired decision-making, future-planning difficulty.

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Aetiology, risk & protective factors

Aetiology (cause unknown; risk-factor evidence)

  • Biological: genetics (55% concordance in monozygotic twins), serotonin dysregulation
  • Psychological: depression, anxiety, obsessive-compulsive features, perfectionism, low self-esteem
  • Developmental: adverse life events/difficulties, early dietary/feeding problems, parental attitudes (parent with own ED)
  • Sociocultural: substance abuse, negative body image from media, image-aware activities (e.g. ballet)

Risk factors

  • Personality: perfectionism, low self-esteem, desire for control
  • Bullying; family difficulties (parental separation, moving, bereavement); schoolwork / pressure to achieve
  • More common in females, Western world, middle/upper social classes; can run in families; thinness seen as desirable
  • May coexist with depression, PTSD, OCD

Protective factors

  • Psychological: high self-esteem, positive body image, assertiveness, good social + problem-solving/coping skills
  • Social/cultural: regular family meals; family does not overemphasise weight/attractiveness; culture accepting a wide range of body shapes/sizes

Prevalence

  • Anorexia ~0.3–1.8% (West) vs 0–0.9% (Asia); Bulimia ~1–4% women / ~0.2% men (West)