Agitation, rigidity and fever in a young man on two antipsychotics - and the question of restraint
Sergey, 34, has treatment-resistant schizophrenia and is brought to the psychiatric emergency department by police after threatening a neighbour. Six days ago risperidone 2 mg twice daily was added to his depot haloperidol decanoate 100 mg intramuscularly monthly, last given 10 days ago. He is agitated, trying to leave, diaphoretic and confused. Temperature 38.6 °C, HR 128, BP 156/96, RR 24, oxygen saturation 96%. He has generalised 'lead-pipe' rigidity in all limbs, a coarse tremor, and is mute between outbursts. Labs: creatine kinase 6,200 units/L, WBC 13.2, creatinine 1.5 mg/dL, potassium 5.1, dark urine. His brother says he stopped drinking fluids during the heatwave. Security staff have applied four-point restraints.
1. What is the most likely diagnosis and what alternatives must you actively exclude? What is the single most important immediate medication action?
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The picture - exposure to two dopamine-blocking agents, lead-pipe rigidity, hyperthermia, autonomic instability (HR 128, BP 156/96, diaphoresis), altered consciousness, CK 6,200 and early renal impairment - is neuroleptic malignant syndrome.
Alternatives to exclude actively:
- Serotonin syndrome: would expect clonus, hyperreflexia, dilated pupils, diarrhoea; usually with serotonergic combinations. The rigidity and bradykinesia here favour NMS.
- Anticholinergic toxicity: dry skin, mydriasis, urinary retention, delirium; she is diaphoretic, which argues against it.
- Heat stroke / exertional hyperthermia: plausible given the heatwave and dehydration, but does not explain lead-pipe rigidity; it can, however, coexist.
- Acute dystonia or lethal catatonia, sepsis/meningitis, alcohol or stimulant withdrawal, and non-convulsive status.
Single most important immediate action: stop all antipsychotic medication - no further haloperidol or risperidone, and cancel the next depot. This must be documented, prescribed and communicated to the ward and to the patient's community psychiatrist so it is not restarted inadvertently.
Then: move to a monitored high-dependency area, IV fluids, active cooling, continuous monitoring, check CK and renal function serially, check electrolytes and glucose, and treat agitation with benzodiazepines rather than more antipsychotics. Antipyretics do not correct central hyperthermia.
2. What is your position on the four-point restraints, and how do you act on it in the next 15 minutes?
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Physical restraint is the wrong intervention here and is actively dangerous. It increases struggling, muscle breakdown and hyperthermia, worsens rhabdomyolysis and hyperkalaemia, and adds a serious risk of aspiration, thrombosis and sudden death in a patient with autonomic instability. It also escalates the agitation it is meant to control.
In the next 15 minutes:
- Release or minimise the restraints as soon as safety allows; leave a staff member with him at all times, reduce stimulation, and use verbal de-escalation with a familiar nurse.
- Treat the agitation pharmacologically with a benzodiazepine (for example lorazepam) as prescribed - this is the correct agent in NMS, and it will also help the rigidity.
- Justify and document: restraint in Israel requires a physician's order, an indication of immediate danger, a defined time limit, regular review and monitoring of circulation, breathing and consciousness. Ask the physician to review the order now, record the clinical reasoning (hyperthermia, rhabdomyolysis, dehydration) and the alternatives attempted.
- Complete physical monitoring: continuous cardiac monitor, temperature, urine colour and output, and repeat potassium - he is at risk of arrhythmia and acute kidney injury.
- Secure a medical/surgical bed or ICU if he remains unstable; psychiatric admission alone is not enough.
- Notify the responsible psychiatrist and, if restraint continues, the mechanism required by hospital policy for review of restrictive practice.
3. He later asks to sign himself out. How do you assess and act, and what would you hand over about his medication?
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Assess decision-making capacity for this specific decision, not 'insight' in general: can he understand the information about his condition, retain it, weigh it, and communicate a choice? With a temperature of 38.6 °C, confusion, rigidity, CK over 6,000 and renal impairment, he is very likely to lack capacity for this decision, and his attempt to leave should be treated as a symptom, not an autonomous choice.
Actions:
- Do not physically bar the door impulsively; call the responsible psychiatrist immediately and document the assessment.
- He is medically unstable and needs treatment for a life-threatening condition. Detention for medical treatment rests on the treating physician's assessment of danger and incapacity under the Patient's Rights Law framework, with the psychiatrist involved; if a psychiatric hold is being considered, that follows the Mental Health Law route, which requires the statutory order and review by a district psychiatrist. Know your hospital's procedure and who signs, and never invent a legal basis - record the facts, the assessment and the name of the person making the decision.
- Involve the brother, provide information in his language, and use an interpreter if needed.
Handover about medication: NMS is a reason to avoid all dopamine antagonists and to avoid abrupt rechallenge. Document the exact agents, doses and dates, flag allergy-type alerts in the record, note that clozapine is usually the preferred option after NMS because of its low D2 affinity, and ensure the community psychiatrist receives a written summary. Warn about future heat exposure, dehydration and the risk of recurrence.