Prevalence of interpersonal trauma exposure and trauma-related disorders in severe mental illness

Abstract

Background: Interpersonal trauma exposure and trauma-related disorders in people with severe mental illness (SMI) are often not recognized in clinical practice. Objective: To substantiate the prevalence of interpersonal trauma exposure and trauma-related disorders in people with SMI. Methods: We conducted a systematic review of four databases (1980–2010) and then described and analysed 33 studies in terms of primary diagnosis and instruments used to measure trauma exposure and trauma-related disorders. Results: Population-weighted mean prevalence rates in SMI were physical abuse 47% (range 25–72%), sexual abuse 37% (range 24–49%), and posttraumatic stress disorder (PTSD) 30% (range 20–47%). Compared to men, women showed a higher prevalence of sexual abuse in schizophrenia spectrum disorder, bipolar disorder, and mixed diagnosis groups labelled as having SMI. Conclusions: Prevalence rates of interpersonal trauma and trauma-related disorders were significantly higher in SMI than in the general population. Emotional abuse and neglect, physical neglect, complex PTSD, and dissociative disorders have been scarcely examined in SMI.

Keywords

• Childhood trauma
• sexual abuse
• physical abuse
• emotional abuse
• neglect
• posttraumatic stress disorder
• complex posttraumatic stress disorder
• dissociative disorder
• severe mental illness