title: Axis I dissociative disorder comorbidity in borderline personality disorder and reports of childhood trauma.
abstract: OBJECTIVE
  The purpose of this study was to examine the dissociative disorder comorbidity of borderline personality disorder and its relation to childhood trauma reports in a nonclinical population.
  
  
  METHODS
  In April 2003, 1301 college students were screened for borderline personality disorder using the Structured Clinical Interview for DSM-IV Personality Disorders. The Childhood Trauma Questionnaire and Steinberg's dissociation questionnaires were also administered. During May and June 2003, 80 students with a diagnosis of borderline personality disorder and 111 nonborderline students were evaluated using the Structured Clinical Interview for DSM-IV Dissociative Disorders by an interviewer blind to the diagnosis and scores obtained during the first phase.
  
  
  RESULTS
  The prevalence of borderline personality disorder was 8.5%. A significant majority (72.5%; 58/80) of the borderline personality disorder group had a dissociative disorder, whereas this rate was only 18.0% (20/111) for the comparison group (p < .001). Childhood emotional and sexual abuse, physical neglect, and total childhood trauma scores had significant effect for borderline personality disorder (p < .001, p = .038, p = .044, and p = .003, respectively), whereas emotional neglect and diminished minimization of childhood trauma had significant effect for dissociative disorder (p = .020 and p = .007, respectively).
  
  
  CONCLUSIONS
  A significant proportion of subjects with borderline personality disorder have a comorbid dissociative disorder. Lack of interaction between dissociative disorder and borderline personality disorder diagnoses for any type of childhood trauma contradicts the opinion that both disorders together might be a single disorder. Recognizing highly prevalent but usually neglected Axis I dissociative disorder comorbidity in patients with borderline personality disorder may contribute to conceptual clarification of this spectrum of psychopathology.
authors.affiliation: Department of Psychiatry, Clinical Psychotherapy Unit and Dissociative Disorders Program, Medical Faculty of Istanbul, Turkey. vsar@istanbul.edu.tr
authors.forename: Vedat
authors.initials: V
authors.lastname: Sar
authors.forename: Gamze
authors.initials: G
authors.lastname: Akyuz
authors.forename: Nesim
authors.initials: N
authors.lastname: Kugu
authors.forename: Erdinc
authors.initials: E
authors.lastname: Ozturk
authors.forename: Hayriye
authors.initials: H
authors.lastname: Ertem-Vehid
mesh_terms: D000293:Adolescent; D000328:Adult; D001883:Borderline Personality Disorder / Q000175:diagnosis / Q000453:epidemiology*; D002648:Child; D002649:Child Abuse / Q000175:diagnosis / Q000523:psychology / Q000706:statistics & numerical data*; D002650:Child Abuse, Sexual / Q000175:diagnosis / Q000523:psychology / Q000706:statistics & numerical data; D015897:Comorbidity; D039721:Diagnostic and Statistical Manual of Mental Disorders; D004213:Dissociative Disorders / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008016:Life Change Events; D008297:Male; D015995:Prevalence; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires