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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Suicide and self-harm risk formulation

Psychiatry · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
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Imminent suicidal action or serious injury

An act in progress, recent potentially lethal self-harm, current intent with available means, inability to delay action, severe intoxication or loss of a safe environment requires immediate emergency intervention.

Action: Treat physical injury and poisoning using the relevant emergency pathway, remove access to immediate means where safe, arrange continuous proportionate observation and obtain urgent mental-health assessment. Involve emergency services when the setting cannot maintain safety, assess capacity for each decision and document the lawful basis of any restriction or non-consensual information sharing.

Synopsis

Assess suicidal thinking and self-harm through a compassionate psychosocial assessment, formulate person-specific scenarios and changing drivers, and translate evidence, strengths and uncertainty into immediate safety actions without relying on predictive scores.

  • Ask directly about thoughts of death, self-harm, suicide, intent, method, timing, preparation, access to means, interruption and what has prevented action so far.
  • Establish the function and context of any self-harm, including relief, communication, punishment, dissociation, compulsion or suicidal intent, without assuming one purpose from the method.
  • Build a chronology of previous acts, lethality, intent, rescue, treatment and periods of recovery; recent change and trajectory often matter more than a static factor list.
  • Assess mood, psychosis, agitation, substance use, sleep, pain, physical illness, trauma, relationships, housing, finance, legal stress, access to care and safeguarding.
  • Formulate plausible scenarios: what harm may occur, under which triggers, with which means, in what timeframe, and which warning signs indicate escalation.
  • Identify protective factors and strengths, then test whether they are available and effective during the anticipated crisis rather than adding them as reassuring points.
  • Use collateral information and records with consent where possible; receive urgent safety information even when confidentiality prevents disclosing clinical details in return.
  • Agree a collaborative safety plan that includes warning signs, internal coping, safe people and places, professional contacts and practical restriction of lethal means.
  • Document the formulation, actions, capacity, information sharing, follow-up owner and uncertainty; reassess after sobriety, treatment, new information and transitions.

Key red flags

A specific plan, rehearsal, final arrangements, concealed preparation, available lethal means or stated inability to remain safe markedly increases immediate concern even when the person appears calm.

Recent discharge, major loss, escalating pain, agitation, insomnia, intoxication, shame, command hallucinations or abrupt withdrawal from support can create rapid change in the risk pathway.

A medically minor act may carry high suicidal intent, whereas severe injury may arise without intent to die; treatment need and psychosocial meaning must be assessed separately.

Children, dependants, work or religious belief are not automatic protection and may also contribute burden, guilt or entrapment.

Do not use a risk scale, global low-medium-high category or absence of a known risk factor to decide discharge, deny care or predict an individual suicide.

Investigation priorities

01
Psychosocial assessmentFirst stepPreferred

Understand the self-harm or suicidal crisis, needs, mental state, strengths, context and preferred help.

Management branches

Immediate responseTreat, contain and clarify danger

Self-harm has occurred or current suicidal action may be near.

  1. Stabilise physical injury or poisoning, reduce immediate access to means and arrange observation matched to the actual environment and behaviour.
  2. Ask directly about intent, method, timing, preparation and ability to collaborate with safety while obtaining urgent collateral facts when needed.
  3. Arrange the least restrictive setting that can deliver necessary care, documenting capacity, legal basis, information sharing and the receiving clinician.
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Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • NICE NG225 self-harm recommendationsPsychosocial assessment, prohibition of predictive stratification, safety planning and aftercare.
  • NICE NG222 depression in adults recommendationsAssessment of suicide risk, social context, treatment and review in depression.
  • GMC confidentiality guidanceProportionate disclosure where failure to share may expose someone to death or serious harm.
  • NICE CG136 service user experience recommendationsCollaborative crisis care, communication and involvement.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom