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Catatonic Excitement: Clinical Features and Management

Catatonic excitement is a severe neuropsychiatric syndrome characterized by excessive, purposeless, non-goal-directed motor activity and agitation. It is a medical/psychiatric emergency.

Core Features

  • Motor: Pacing, rocking, grimacing, stereotypies, flailing, running, disrobing.
  • Vocal: Loud, pressured, incoherent speech, shouting, screaming, echolalia, perseveration.
  • Behavioral: Impulsive aggression (hitting, biting, throwing), property destruction, disinhibition.
  • Cognitive/Affective: Impaired awareness, poor eye contact, unresponsive to verbal commands, labile affect, delusions/hallucinations may coexist.
  • Autonomic: Tachycardia, hypertension, hyperthermia, diaphoresis, dehydration, rhabdomyolysis risk.

Etiologies

  • Psychiatric: Bipolar I (manic/mixed), schizophrenia (catatonic subtype), schizoaffective, severe MDD with catatonia.
  • Medical/Neurologic: Encephalitis (autoimmune, infectious), NMDAR encephalitis, stroke, TBI, metabolic (hyponatremia, hepatic encephalopathy), drug toxicity (stimulants, PCP, anticholinergics), NMS, serotonin syndrome.

Emergency Management

  1. Safety: Protect patient/staff. Seclusion/restraint as last resort per protocol.
  2. Medical Workup: Vitals, glucose, electrolytes, renal/hepatic, CK, tox screen, ABG, ECG, CT/MRI head, LP if encephalitis suspected.
  3. First-Line Pharmacologic: Lorazepam 1–2 mg IV/IM (repeat q5–10 min to effect, max 8–10 mg/24h). Diazepam alternative. Response rate 60–80%.
  4. Second-Line: If benzodiazepine failure → ECT (electroconvulsive therapy) is gold standard (high efficacy, rapid). Antipsychotics (risperidone, olanzapine) used cautiously (risk NMS, worsening catatonia). Avoid typical antipsychotics.
  5. Supportive: Hydration, nutrition, cooling, rhabdo monitoring, DVT prophylaxis.

Prognosis

Excellent with prompt treatment (especially benzodiazepines/ECT). Delayed treatment → medical complications, longer recovery. Address underlying etiology (mood stabilizer for bipolar, immunotherapy for autoimmune encephalitis).

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