Examining potential overlap of DSM-5 PTSD criteria D and E.

The Diagnostic and Statistical Manual, Fifth Edition-5 (DSM-5) has adopted a four-factor symptom model for Posttraumatic Stress Disorder (PTSD) that includes new symptom additions in criterion D (D2, D3, D4), negative alterations in cognition and mood. This article examines potential overlapping endorsement of these symptoms amongst one another and with the behavioral symptoms within PTSD criterion E (E1 and E3; alterations in arousal and reactivity), through the lenses of cognitive-behavioral theory. Responses of veteran participants (N=320) completing the PTSD Checklist-5 were used to determine overlap in symptom reporting. We conducted a series of direct logistic regressions to determine the predictive ability of meeting the criterion D or E symptoms based on endorsement of the target D symptoms (D2, D3, D4). Results suggest that the new cognitive and emotional symptoms of criterion D have significant overlapping content, and that thought-related symptoms are often endorsed in conjunction with their behavioral counterpoint (D2/E3; D4/E1). Our results suggest that DSM-5 criterion D symptoms may not be central to the diagnostic structure of PTSD. These symptoms add complexity and difficulty to diagnosing PTSD without adding much unique content.