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  • Title: Somatoform dissociation in depersonalization disorder.
    Author: Simeon D, Smith RJ, Knutelska M, Smith LM.
    Journal: J Trauma Dissociation; 2008; 9(3):335-48. PubMed ID: 19042782.
    Abstract:
    Along with psychoform dissociation, somatoform dissociation has been put forth as a core aspect of dissociative states, possibly as reliable as psychoform dissociation in the screening for dissociative disorders. The goal of this study was to investigate the prominence and correlates of somatoform dissociation in one of the major Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.) dissociative disorders, depersonalization disorder (DPD). A total of 54 adults with DPD and 47 healthy control participants free of lifetime Axis I and II disorders were administered the 20-item Somatoform Dissociation Questionnaire (SDQ) as well as the Dissociative Experiences Scale, the Cambridge Depersonalization Scale, and the Childhood Trauma Questionnaire-Short Form. Somatoform dissociation scores were statistically significantly, but clinically only modestly, elevated in the DPD as compared to the healthy control group. SDQ items significantly elevated in the DPD group were mostly perceptual in nature. Depersonalization scores were significantly correlated with somatoform dissociation in the DPD group, whereas absorption and amnesia scores were not. With respect to childhood interpersonal trauma, although emotional abuse was significantly associated with depersonalization severity, none of the 5 categories of trauma were significantly associated with somatoform dissociation in the DPD group. In conclusion, somatoform dissociation is modest in DPD, and the SDQ is a weak instrument for the screening of dissociation in this disorder, detecting only one third of the sample when using the traditional SDQ cutoff score of 30.
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