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A review of current evidence regarding the ICD-11 proposals for diagnosing PTSD and complex PTSD

Research output: Contribution to journalArticle

Chris R. Brewin ; Marylène Cloitre ; Philip Hyland ; Mark Shevlin ; Andreas Maercker ; Richard A. Bryant ; Asma Humayun ; Lynne M. Jones ; Ashraf Kagee ; Cécile Rousseau ; Daya Somasundaram ; Yuriko Suzuki ; Simon Wessely ; Mark van Ommeren ; Geoffrey M. Reed

Original languageEnglish
JournalClinical Psychology Review
Early online date6 Sep 2017
StateE-pub ahead of print - 6 Sep 2017

King's Authors


The World Health Organization's proposals for posttraumatic stress disorder (PTSD) in the 11th edition of the International Classification of Diseases, scheduled for release in 2018, involve a very brief set of symptoms and a distinction between two sibling disorders, PTSD and Complex PTSD. This review of studies conducted to test the validity and implications of the diagnostic proposals generally supports the proposed 3-factor structure of PTSD symptoms, the 6-factor structure of Complex PTSD symptoms, and the distinction between PTSD and Complex PTSD. Estimates derived from DSM-based items suggest the likely prevalence of ICD-11 PTSD in adults is lower than ICD-10 PTSD and lower than DSM-IV or DSM-5 PTSD, but this may change with the development of items that directly measure the ICD-11 re-experiencing requirement. Preliminary evidence suggests the prevalence of ICD-11 PTSD in community samples of children and adolescents is similar to DSM-IV and DSM-5. ICD-11 PTSD detects some individuals with significant impairment who would not receive a diagnosis under DSM-IV or DSM-5. ICD-11 CPSTD identifies a distinct group who have more often experienced multiple and sustained traumas and have greater functional impairment than those with PTSD.

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