Catatonia: clinical features, causes, diagnosis, and management

Core signs and subtypes

Common features include mutism, stupor, negativism (resisting instructions), posturing, and a peculiar motor flexibility known as waxy flexibility. Other signs are echolalia (repeating words) and echopraxia (mimicking movements). Clinically, catatonia is often described as:

• Stuporous catatonia: marked immobility and lack of response.
• Excited catatonia: excessive, purposeless motor activity and agitation.
• Mixed presentations that alternate between immobility and agitation.

Causes and mechanisms

Catatonia is not a single disease but a syndrome that can arise from psychiatric disorders (such as mood disorders and some psychotic disorders), neurologic illnesses (infections, stroke, autoimmune encephalitis), metabolic disturbances, or medication effects. The exact brain mechanisms remain incompletely understood; abnormalities in GABAergic, glutamatergic, and dopaminergic systems are implicated, and medical evaluation seeks reversible contributors.

Diagnosis and important distinctions

Diagnosis relies on clinical observation and standardized criteria; clinicians look for a cluster of characteristic signs and evaluate for underlying causes. Differential diagnosis includes severe depression with psychomotor retardation, akinetic mutism, locked-in syndrome, catatonia-like states from medical encephalopathy, and conversion disorders. Prompt recognition matters because management differs.

Treatment and prognosis

First-line treatment typically involves benzodiazepines (for example, a lorazepam challenge) and addressing underlying medical or psychiatric causes. Electroconvulsive therapy (ECT) is highly effective for many patients who do not respond to medication or who have life-threatening symptoms. Supportive care — hydration, nutrition, prevention of complications — is essential. Antipsychotic medications may sometimes worsen catatonia and are used cautiously after catatonic symptoms are controlled.

History and notable facts

The term was introduced in the late 19th century and was historically associated with chronic psychosis, but modern understanding recognizes catatonia across multiple disorders. With timely treatment, many people improve substantially, though outcomes depend on cause, severity, and speed of intervention.