Closing the Post-Emergency Department Gap After Self-Harm: Emergency Department-Initiated and Early Follow-Up Strategies for Suicide Prevention

This critical narrative review evaluates whether emergency department (ED)-initiated interventions and early post-discharge strategies can be linked into a coherent continuum of suicide prevention following a self-harm presentation. Self-harm is among the most common reasons for emergency department attendance and the strongest clinical predictor of subsequent suicide, yet an ED encounter does not automatically translate into sustained engagement with preventive care. Synthesizing contemporary systematic reviews, meta-analyses, national registry studies, and landmark emergency department trials published between 2019 and 2026, this review examines the evidence behind psychosocial assessment, safety planning, lethal-means safety counseling, brief psychosocial interventions, rapid outpatient follow-up, active post-discharge contact, and department-wide systems interventions. The findings highlight that recurrence of self-harm and suicide risk are highest in the weeks following an index presentation, and referral to aftercare frequently fails to translate into confirmed clinical contact. While brief interventions and contacts are associated with modest but consistent reductions in suicide re-attempts, evidence for reducing self-harm recurrence specifically, and for improving formal linkage to mental health services, remains sparse and of low certainty. Furthermore, registry data demonstrate that referral without confirmed connection does not causally prevent recurrence. The review concludes that the emergency department functions best as prevention when treated as the opening stage of a continuum rather than a discrete episode. No single intervention component has been shown to independently guarantee sustained protection. The strength of prevention appears to depend on the connectedness of the pathway as a whole, suggesting that clinical practice and future research should prioritize strengthening the transition from acute care to confirmed early follow-up rather than searching for a single, more powerful emergency-department-based technique.