Psychiatry Learning Map

Psychiatry: disorder groups

Schizophrenia & other psychotic disorders

Psychotic disorders, chief among them schizophrenia, are conditions where a person loses touch with shared reality through hallucinations, delusions or disorganised thinking. Recognising, treating and supporting people with psychosis over many years is a central part of a psychiatrist's work.

Depth by stage, Pre-U → Consultant (details)

What is it?

Psychosis means experiencing things that others do not share: hearing voices when no one is there (hallucinations), holding fixed false beliefs such as being followed or controlled (delusions), or speaking and behaving in a confused, disorganised way. Schizophrenia is the best-known psychotic disorder, but psychosis also appears in schizoaffective disorder, delusional disorder, brief psychotic episodes, and as part of severe mood disorders, drug use or physical illness.

Schizophrenia usually begins in late adolescence or early adulthood. Besides the dramatic 'positive' symptoms, many people have 'negative' symptoms such as reduced motivation, flat emotional expression and social withdrawal, and difficulties with attention and memory that affect study and work.

With early treatment, a combination of medication, family support, psychological help and rehabilitation, many people recover well or live meaningful lives with the condition. In Malaysia, much of this care is delivered by general hospital psychiatric departments, the state psychiatric hospitals and community mental health teams.

Why does a psychiatrist need it?

Psychotic disorders fill a large share of inpatient beds and community caseloads in Malaysian psychiatry. A psychiatrist must diagnose psychosis confidently, exclude medical and drug causes, choose and monitor antipsychotics (including clozapine and long-acting injections), use the Mental Health Act when someone lacks insight and is at risk, and work with families over decades. Every psychiatry examination tests this area heavily.

What level is expected at each stage?

Scale: 1. Aware → 2. Understands → 3. Applies → 4. Masters / Teaches. What the levels mean.

  1. Pre-UNot expected
  2. Pre-clinicalAwareKnows the word psychosis, basic dopamine ideas and that schizophrenia is a brain-based illness, not a character flaw.
  3. ClinicalUnderstandsCan recognise hallucinations and delusions in a ward patient, present a basic history and name first-line antipsychotics.
  4. HousemanshipUnderstandsRecognises acute psychosis or delirium on medical wards, gives safe emergency sedation under guidance and refers to psychiatry.
  5. Medical officerAppliesAssesses new psychotic presentations, starts and adjusts antipsychotics, monitors side effects and manages ward patients with supervision.
  6. Psych traineeMasters / TeachesDiagnoses across the psychotic spectrum, manages treatment resistance and clozapine, uses the Mental Health Act and leads family work; heavily examined.
  7. Specialist / consultantMasters / TeachesLeads services such as early-intervention or clozapine clinics, handles the most complex cases and teaches trainees.

What are the key topics?

Conditions in this group

  • Schizophrenia (ICD-11 6A20; DSM-5-TR schizophrenia spectrum)
  • Schizoaffective disorder
  • Schizotypal disorder (ICD-11 places it in this chapter; DSM-5-TR lists it also as a personality disorder)
  • Acute and transient psychotic disorder / brief psychotic disorder
  • Delusional disorder
  • Substance- or medication-induced psychotic disorder
  • Psychotic disorder due to another medical condition (secondary psychotic syndrome)
  • Catatonia, which can occur with psychotic, mood and medical conditions

Symptoms and course

  • Positive symptoms: hallucinations (often voices), delusions (persecution, reference, control, grandiosity)
  • Negative symptoms: avolition, alogia, blunted affect, anhedonia, social withdrawal
  • Disorganisation: thought disorder, odd behaviour
  • Cognitive impairment in attention, working memory and processing speed
  • Prodrome, first episode, relapse and residual phases
  • Duration of untreated psychosis and why it matters for outcome
  • Insight and its effect on engagement with treatment

Causes and risk factors

  • Genetic liability: higher risk in relatives, many common variants of small effect, some rare copy-number variants
  • Neurodevelopmental model: obstetric complications, early developmental delays
  • Dopamine hypothesis (mesolimbic excess, mesocortical deficit) and glutamate/NMDA hypothesis
  • Cannabis and stimulant use as triggers and risk factors
  • Urban upbringing, migration, childhood adversity
  • Stress-vulnerability model

Assessment

  • Full psychiatric history, collateral history from family
  • Mental state examination focused on perception, thought content and form, insight
  • Physical examination and investigations to exclude organic causes: blood tests, urine drug screen, and brain imaging or EEG when indicated
  • Risk assessment: to self, to others, self-neglect, vulnerability
  • Baseline metabolic monitoring before antipsychotics (weight, glucose, lipids, ECG when needed)
  • Rating scales such as PANSS or BPRS in research and audit

Management

  • Antipsychotics: first-generation (e.g. haloperidol) and second-generation (e.g. risperidone, olanzapine, aripiprazole, quetiapine)
  • Long-acting injectable antipsychotics to support adherence
  • Treatment-resistant schizophrenia and clozapine, with mandatory blood count monitoring
  • Side effects: extrapyramidal symptoms, tardive dyskinesia, metabolic syndrome, hyperprolactinaemia, neuroleptic malignant syndrome
  • Psychological help: CBT for psychosis, family intervention, psychoeducation
  • Rehabilitation, supported employment, housing and community follow-up
  • ECT for catatonia and some severe or resistant presentations

Malaysian service context

  • Care is shared between general hospital psychiatric departments, the state psychiatric hospitals and community mental health teams
  • MOH has published a Clinical Practice Guideline on the management of schizophrenia
  • Involuntary admission and treatment under the Mental Health Act 2001 and its 2010 Regulations
  • Families are often the main carers; stigma and beliefs about spiritual causes can delay help-seeking

How is it learned and assessed?

  • Undergraduate psychiatry posting: clerking ward patients, case presentations, end-of-posting assessment and OSCE stations
  • As MO: daily ward and clinic work under supervision, on-call assessments
  • MMed Psychiatry: covered in Part I (relevant basic sciences, psychopharmacology) and heavily in Part II (long case, short cases, written papers)
  • MRCPsych: psychopharmacology and psychopathology in Paper A, clinical topics and evidence in Paper B, history-taking and explanation stations in the CASC
  • Workplace-based assessments and logbooks during training

Typical textbooks and resources

  • Shorter Oxford Textbook of Psychiatry — Oxford University Press; standard core text
  • Kaplan & Sadock's Synopsis of Psychiatry — Wolters Kluwer; broad reference
  • The Maudsley Prescribing Guidelines in Psychiatry — Wiley; practical prescribing reference
  • Stahl's Essential Psychopharmacology — Cambridge University Press; mechanisms of antipsychotics
  • MOH Malaysia Clinical Practice Guidelines on schizophrenia — Ministry of Health

Titles are widely used examples; editions change. Use university libraries or legitimate purchases.

Common questions

Is schizophrenia the same as split personality?

No. Schizophrenia involves losing touch with reality through hallucinations, delusions or disorganised thinking. 'Split personality' is a popular phrase for dissociative identity disorder, which is a different and much rarer condition.

Can people with schizophrenia recover?

Many can. Outcomes vary widely: some have one episode and recover, others have a longer-term illness that is well controlled with treatment. Early treatment, staying on effective medication, family support and rehabilitation all improve the outlook.

Related subjects

Official sources to check