Managing Disturbed or Psychiatric Patients in the Emergency Department
Disturbed and psychiatric presentations are common and increasing in emergency departments. Safe, lawful and effective ED care depends on rapid triage and medical stabilisation, patient‑centred de‑escalation, early involvement of mental‑health liaison, and proportionate use of restraint and rapid tranquillisation only when necessary.
This section summarises practical ED‑focused actions and principles drawn from NICE (NG225, NG10), RCEM guidance (ABD and Mental‑Health Toolkit) and the Mental Capacity Act framework.
Key priorities
- Maintain patient and staff safety while preserving dignity and providing the least‑restrictive care that is practicable.
- Rule out and treat organic or medical causes first, including delirium, intoxication, hypoxia and metabolic disturbance.
- Use verbal de‑escalation and environmental measures as first‑line interventions; escalate to sedation or restraint only when there is imminent risk.
- Ensure lawful practice by assessing capacity, documenting decisions and following local detention/use‑of‑force policies in line with the Mental Capacity Act and local legislation.
Rapid triage and immediate actions on arrival
Aim to identify life‑threatening medical problems and immediate risk to the patient or others.
Immediate actions
- Perform a primary survey (A-E) and treat any life‑threatening problems such as airway compromise, significant hypoxia, shock, major trauma or severe hyperthermia.
- Conduct a rapid risk screen for self‑harm, suicide intent, aggression and vulnerability.