Abstract
Background: The purpose of this preliminary study was to investigate HPA axis function in dissociation. Methods: Nine subjects with DSM-IV depersonalization disorder (DPD), without lifetime Posttraumatic Stress Disorder (PTSD) or current major depression, were compared to nine healthy comparison (HC) subjects of comparable age and gender. Results: DPD subjects demonstrated significant hyposuppression to low-dose dexamethasone administration and significantly elevated morning plasma cortisol levels when covaried for depression scores, but no difference in 24-hour urinary cortisol excretion. Dissociation scores powerfully predicted suppression whereas depression scores did not contribute to the prediction. Conclusions: Primary dissociative conditions, such as depersonalization disorder, may be associated with a pattern of HPA axis dysregulation that differs from PTSD and merits further study.
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