Suicide Crisis Syndrome: examining supporting evidence and barriers to diagnostic validity

Despite decades of research our understanding of the suicidal mind in the short term remains limited contributing to over 700,000 deaths annually worldwide (1).We must therefore critically evaluate our paradigms which currently rely on self-reported suicidal ideation the broader construct of suicide risk we must develop new prevention frameworks to facilitate meaningful change.We propose that the Suicide Crisis Syndrome (SCS), a novel suicidal state currently under review for inclusion in future editions of the Diagnostic and Statistical Manual of Mental Disorder, Fifth Edition, Text Revision (DSM-5-TR), offers such a framework.SCS addresses a key gap in psychiatric nosology by systematically identifying individuals at imminent risk (2, 3).As the final, acute stage of the Narrative Crisis Model (NCM), SCS traces suicidal progression from chronic risk to imminent crisis without relying on selfreported intent (3)(4)(5)(6)(7).This model provides a basis for treatments targeting each stage of suicidality (7).Establishing SCS as a suicide-specific diagnosis could shift prevention efforts and reduce rising suicide rates.The purpose of this review is to evaluate the experimental evidence supporting the classification of Suicidal Crisis Syndrome (SCS) as a distinct clinical entity.Our approach builds on a previously published review in Frontiers that examined the proposed inclusion of Suicidal Behavior Disorder in the DSM (8).Specifically, we assess the extent to which the proposed diagnosis of SCS satisfies-or fails to satisfy-the Feighner criteria (9) and Kendler's (10) guidelines for the inclusion of new diagnoses in the DSM.Accordingly, this paper does not address broader arguments for or against the formal inclusion of a suicide-specific diagnosis in the DSM that fall outside the domain of empirical research.Complex considerations-such as the potential positive and negative implications of such a diagnosis for insurance coverage, employment, and social status, as well as concerns regarding the overmedicalization of suicidality and the pathologizing of normative emotional responses to crisis-have been extensively explored in recent Crisis editorials (11,12) and in other sources (13,14).These important but broader issues are beyond the scope of this review.