Self-harm and suicide risk
A behaviour and a risk state, not a diagnosis, arising when overwhelming distress outstrips a person's coping resources and problem-solving narrows to escape rather than solutions.
In a nutshell
Self-harm and suicide sit on an overlapping but distinct spectrum: both arise from cognitive constriction under unbearable distress, where perceived options narrow until an act of harm feels like the only escape. Assessment is a collaborative conversation, not a score, and the two levers that reduce deaths are means restriction and human connection.
Classic presentation
A person presents after an act of self-harm or self-poisoning; assessment must establish current suicidal ideation, plan, intent and access to means, alongside the psychosocial context, regardless of how the act is described by the patient.
Key points
- Self-harm is primarily an emotion-regulation strategy; suicidal intent must be assessed separately and explicitly rather than assumed from the act alone.
- No risk-scoring tool reliably predicts an individual suicide; UK guidance favours a full psychosocial assessment over rigid stratification tools.
- Hopelessness and cognitive constriction are the mechanistic bridge from distress to a suicidal act: restoring a sense of options is therapeutic.
- Means restriction during the highest-risk window prevents deaths because the acute crisis state is often transient.
- Always ask directly about suicidal thoughts, plan and intent: doing so does not increase risk and is essential to accurate assessment.
- Treat any identified underlying condition (depression, psychosis, alcohol or substance dependence) as part of reducing future risk.
First-line investigation
A comprehensive, non-judgemental psychosocial assessment covering the act, current ideation/intent/means and psychosocial context, supported by collateral history where possible.
First-line management
Treat any medical emergency, then complete a psychosocial assessment, restrict access to means, build a collaborative safety plan, and arrange proportionate follow-up.
Exam traps
- A calm, composed presentation after self-harm does not exclude ongoing suicidal intent: cognitive constriction can coexist with an outwardly settled affect.
- Risk-assessment tools (e.g. numerical scoring scales) should not be used alone to predict risk or to determine referral; they are an aid to conversation only.
- Asking about suicidal ideation directly does not plant the idea or increase risk: avoiding the question is the error.
- Self-harm without suicidal intent still warrants full psychosocial assessment; it should never be dismissed as attention-seeking or low priority.
- Discharge without a safety plan or follow-up arrangement is a common exam trap answer to avoid.
Educational content pending clinical review. Not medical advice.