Catatonia

Diagnostic formulation #

Catatonia is a psychomotor syndrome that can accompany psychiatric illness, substances, medicines or physical disease. Mutism or immobility alone is insufficient; observation and examination establish the pattern.

Targeted assessment #

Document onset, motor signs, speech, responsiveness, oral intake, autonomic signs and baseline function. Obtain collateral, including recent medicine initiation, dose changes, missed benzodiazepines and exposure to substances.

Important alternatives #

Consider delirium, seizures, neuroleptic malignant syndrome, serotonin toxicity, severe depression, parkinsonism and other movement disorders. Catatonia and delirium can coexist; one label must not terminate medical assessment.

Investigations and physical assessment #

Assess vital signs, hydration, nutrition, swallowing, pressure areas and complications of immobility. Clinical findings guide laboratory tests, ECG, EEG, neuroimaging and investigation of encephalitis or other neurological disease.

Treatment and recovery #

Arrange urgent assessment in a setting able to treat the syndrome and its complications. A supervised benzodiazepine assessment or ECT may be indicated under specialist care; this chapter does not provide an unsupervised challenge or dose algorithm.

Doses & prescribing #

Each prescribing record identifies its population and source jurisdiction; international labeling does not establish Indian approval. The clinician selects treatment after assessment.

This chapter supplies assessment and care context. No condition-specific numerical prescribing schedule has been verified in this expansion; use an appropriately reviewed medicine reference and individual specialist plan where medication is indicated.

When progress is limited #

Reassess the syndrome, underlying cause, delivered treatment and complications. Persistent fever, autonomic instability, exhaustion or poor intake warrants urgent escalation rather than waiting for a routine psychiatric review.

Continuing care and discontinuation #

After improvement, treat the underlying condition and plan clinician-led continuation or reduction of treatment. Document previous episodes and early motor or behavioural changes; abrupt changes can complicate recovery.

Age and population considerations #

In autism and intellectual disability, establish a clear change from developmental baseline. Paediatric and older-adult presentations require appropriate specialist assessment and attention to medical causes and treatment vulnerability.

Follow-up priorities #

Reassess motor signs, vital signs, intake, mobility and medical complications at intervals matched to acuity. A lower rating-scale total does not independently establish readiness for discharge.

Clinical pitfalls #

Do not assume immobility is deliberate or that excited behaviour excludes catatonia. Avoid reflexive antipsychotic escalation before evaluating the syndrome and possible medicine-related causes.

Catatonia associated with another mental disorder #

Establish both the catatonic syndrome and the associated mood, psychotic or developmental condition. Record the evidence for their relationship; catatonia is not synonymous with schizophrenia.

Substance- or medication-induced catatonia #

Reconstruct exposure and withdrawal timing, including missed prescribed medicines. Causation requires a clinically plausible relationship and assessment of alternative medical and psychiatric causes; a positive drug screen alone is insufficient.

Catatonia with cause not yet established #

When the syndrome is established but attribution is unresolved, document the uncertainty and continue medical and psychiatric investigation. An unspecified code does not make a presentation low acuity.

Secondary catatonia syndrome #

A secondary catatonia formulation attributes the established syndrome to a medical condition. Neurological disease, encephalitis, metabolic illness and other causes require active assessment and cause-directed treatment; a psychiatric history does not exclude a secondary cause.

Assessment tools #

Choose the instrument for its intended purpose; interpretation accompanies the linked tool.

Patient discussion #

Related terminology #

Search terms: catatonic syndrome, stupor, excited catatonia. These terms may differ between classifications; the diagnostic formulation above explains the chapter scope.