Editing Post-traumatic stress disorder (section)

=== In the DSM and ICD ===
PTSD was classified as an [[anxiety disorder]] in the DSM-IV, but has since been reclassified as a "trauma- and stressor-related disorder" in the [[DSM-5]].<ref name="DSM5" /> The DSM-5 diagnostic criteria for PTSD include four symptom clusters: re-experiencing, avoidance, negative alterations in cognition/mood, and alterations in arousal and reactivity.<ref name="DSM5" /><ref name="NIH2016" />

The International Classification of Diseases and Related Health Problems, 10th Revision (ICD-10) classifies PTSD under "Reaction to severe stress, and adjustment disorders."<ref name="World Health Organization">{{cite web |url=https://www.who.int/classifications/icd/en/bluebook.pdf |title=The ICD-10 Classification of Mental and Behavioural Disorders |publisher=[[World Health Organization]] |pages=120–121 |archive-url=https://web.archive.org/web/20140323025330/http://www.who.int/classifications/icd/en/bluebook.pdf |archive-date=2014-03-23 |url-status=live |access-date=2014-01-29}}</ref> The ICD-10 criteria for PTSD include re-experiencing, avoidance, and either increased reactivity or inability to recall certain details related to the event.<ref name="World Health Organization" />

The [[ICD-11]] diagnostic description for PTSD contains three components or symptom groups (1) re-experiencing, (2) avoidance, and (3) heightened sense of threat.<ref>{{Cite news |url=https://www.who.int/news-room/detail/18-06-2018-who-releases-new-international-classification-of-diseases-(icd-11) |title=WHO releases new International Classification of Diseases (ICD 11) |publisher=World Health Organization |access-date=2018-11-15}}</ref><ref name="Brewin_2017">{{cite journal |vauthors=Brewin CR, Cloitre M, Hyland P, Shevlin M, Maercker A, Bryant RA, Humayun A, Jones LM, Kagee A, Rousseau C, Somasundaram D, Suzuki Y, Wessely S, van Ommeren M, Reed GM |title=A review of current evidence regarding the ICD-11 proposals for diagnosing PTSD and complex PTSD |journal=[[Clinical Psychology Review]] |volume=58 |pages=1–15 |date=December 2017 |pmid=29029837 |s2cid=4874961 |doi=10.1016/j.cpr.2017.09.001 |url=http://mural.maynoothuniversity.ie/11577/1/Hyland_Review_2017.pdf}}</ref> ICD-11 no longer includes verbal thoughts about the traumatic event as a symptom.<ref name="Brewin_2017" /> There is a predicted lower rate of diagnosed PTSD using ICD-11 compared to ICD-10 or DSM-5.<ref name="Brewin_2017" /> ICD-11 also proposes identifying a distinct sub-group with [[Complex Post-Traumatic Stress Disorder]] (CPTSD), who have more often experienced several or sustained traumas and have greater functional impairment than those with PTSD.<ref name="Brewin_2017" />