"Can it be trauma if it was not life-threatening?"

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), defines Criterion A for PTSD narrowly: exposure to actual or threatened death, serious injury, or sexual violence. The exposure can be direct, witnessed, learned of (when the event happened to a close family member or friend), or repeated and extreme through occupational duties. This criterion is the formal gate for the PTSD diagnosis in the DSM system. It is also the source of sustained academic debate.

A 2024 review of the Criterion A debate maps four scholarly positions and notes that researchers have consistently documented clinically significant trauma responses in people whose index events do not meet Criterion A (Marx et al., 2024). These include prolonged neglect, betrayal, coercion, repeated humiliation, sustained discrimination, and chronic interpersonal stressors. The presentations meet the symptom criteria but not the event-gate criterion.

A peer-reviewed empirical study by Hyland and colleagues in 2021, using a nationally representative Irish sample of 1,020 adults, tested what happens when the exposure criterion is changed. When no exposure criterion was used, 13.7% of the sample met the symptom criteria for PTSD or Complex PTSD. When the conventional Criterion A was applied, 13.2% qualified. The difference is negligible. More striking, five "psychologically threatening" events that would not meet Criterion A were as strongly associated with PTSD and Complex PTSD as the Criterion A events themselves (Hyland et al., 2021).

The International Classification of Diseases, Eleventh Revision (ICD-11) takes a different approach. The ICD-11 PTSD criteria focus more on the response pattern than the event type. ICD-11 also recognises Complex PTSD as a separate diagnostic entity, which captures the developmental, relational, and prolonged-exposure presentations that the DSM Criterion A framing tends to miss (Cloitre et al., 2020).

In Australia, the third edition of the Australian Guidelines for the Prevention and Treatment of Posttraumatic Stress Disorder formally recognises Complex PTSD alongside PTSD and Acute Stress Disorder (Phelps et al., 2021).

A person whose index experience does not meet Criterion A can still carry the trauma symptom pattern, the functional impairment, and the clinical picture. The formal diagnostic label may or may not apply, depending on the framework used and the specific presentation. The clinical work is still warranted regardless.