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Axis-I Comorbidity in Female Patients With Dissociative Identity Disorder and Dissociative Identity Disorder Not Otherwise Specified

Rodewald, Frauke PhD*†; Wilhelm-Göling, Claudia MD*†ß; Emrich, Hinderk M. MD, PhD*; Reddemann, Luise MD‡; Gast, Ursula MD*§

Journal of Nervous & Mental Disease:
doi: 10.1097/NMD.0b013e318208314e
Original Articles
Abstract

The aim of this study was to investigate axis-I comorbidity in patients with dissociative identity disorder (DID) and dissociative disorder not otherwise specified (DDNOS). Using the Diagnostic Interview for Psychiatric Disorders, results from patients with DID (n = 44) and DDNOS (n = 22) were compared with those of patients with posttraumatic stress disorder (PTSD) (n = 13), other anxiety disorders (n = 14), depression (n = 17), and nonclinical controls (n = 30). No comorbid disorders were found in nonclinical controls. The average number of comorbid disorders in patients with depression or anxiety was 0 to 2. Patients with dissociative disorders averagely suffered from 5 comorbid disorders. The most prevalent comorbidity in DDNOS and DID was PTSD. Comorbidity profiles of patients with DID and DDNOS were very similar to those in PTSD (high prevalence of anxiety, somatoform disorders, and depression), but differed significantly from those of patients with depression and anxiety disorders. These findings confirm the hypothesis that PTSD, DID, and DDNOS are phenomenologically related syndromes that should be summarized within a new diagnostic category.

Author Information

*Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany; †Clinic for Psychiatry and Psychotherapy, AMEOS Klinikum Hildesheim, Hildesheim, Germany; ‡Clinic for Psychotherapeutic and Psychosomatic Medicine, Evangelical Hospital Bielefeld, Bielefeld, Germany; and §Private Practice Havetoftloit, Germany.

Authors Frauke Rodewald and Claudia Wilhelm-Gößling contributed equally to this article.

Send reprint requests to Frauke Rodewald, PhD, AMEOS-Klinikum Hildesheim, Goslarsche Landstraße 60, 31135 Hildesheim, Germany. E-mail: frod.psy@hildesheim.ameos.de.

© 2011 Lippincott Williams & Wilkins, Inc.