Catatonia is a complex neuropsychiatric psychomotor syndrome characterized by a marked disruption in motor behaviour, volition, and response to environmental stimuli. Formally recognized in modern psychiatric nosology as occurring across mood disorders, schizophrenia, and diverse general medical conditions (autoimmune encephalitis, systemic lupus erythematosus, CNS infections), catatonia presents across two distinct clinical phenotypes: Retarded/Stuporous Catatonia (immobility, mutism, staring, stupor, posturing, waxy flexibility, negativism) and Excited Catatonia (incessant, purposeless, frenzied motor hyperactivity). When accompanied by autonomic instability (hyperthermia, tachycardia, labile blood pressure), it represents Malignant Catatonia, a life-threatening medical emergency. The Catatonia and Severe Behavioural Change Psychoeducation Module delivers 19 structured video lessons on Bush-Francis Catatonia Rating Scale (BFCRS) scoring, GABA-A receptor dysregulation, and high-dose benzodiazepine challenge protocols.
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Core Signs: Stupor, Waxy Flexibility, and Negativism
- Stupor & Mutism: Complete immobility and absence of verbal output despite intact awareness of surroundings.
- Waxy Flexibility (Flexibilitas Cerea): The patient offers slight, even resistance to positioning by the examiner, like bending a warm candle, then remains frozen in that posture for hours.
- Negativism & Gegenhalten: Motiveless resistance to instructions or involuntary opposing resistance equal to the examiner’s applied force.
- Echolalia and Echopraxia: Involuntary, robotic copying of the clinician’s words or movements.
GABA-A Science and The Lorazepam Challenge
Catatonia arises from acute hypoactivity in GABA-A receptors within the orbitofrontal cortex and basal ganglia motor loops. Consequently, standard antipsychotics are strictly contraindicated as they can precipitate Malignant Catatonia or Neuroleptic Malignant Syndrome (NMS). Instead, the immediate clinical treatment of choice is the Lorazepam Challenge (1 to 2 mg IV/IM), which typically produces dramatic, temporary symptom remission within 10 to 30 minutes, confirming diagnosis. For refractory cases, Electroconvulsive Therapy (ECT) is the definitive life-saving modality.
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