Editing Anxiety disorder (section)

===Post-traumatic stress disorder===
{{Main|Post-traumatic stress disorder}}
Post-traumatic stress disorder (PTSD) was once an anxiety disorder (now moved to ''trauma- and stressor-related disorders'' in the DSM-V) that results from a traumatic experience. PTSD affects approximately 3.5% of U.S. adults every year, and an estimated one in eleven people will be diagnosed with PTSD in their lifetime.<ref>{{cite web|title=What Is PTSD?|url=https://www.psychiatry.org/patients-families/ptsd/what-is-ptsd|access-date=2020-11-16|website=psychiatry.org}}</ref> Post-traumatic stress can result from an extreme situation, such as combat, natural disaster, rape, hostage situations, child abuse, bullying, or even a serious accident. It can also result from long-term (chronic) exposure to a severe stressor—<ref>{{cite book |title=Post-traumatic Stress Disorder (PTSD) and the Family: For Parents with Young Children |date=2006 |publisher=Veterans Affairs Canada |isbn=978-0-662-42627-1 |url=https://www.veterans.gc.ca/public/pages/publications/system-pdfs/pstd_families_e.pdf |archive-date=6 March 2024 |access-date=3 July 2023 |archive-url=https://web.archive.org/web/20240306063922/https://www.veterans.gc.ca/public/pages/publications/system-pdfs/pstd_families_e.pdf |url-status=dead }}</ref> for example, soldiers who endure individual battles but cannot [[coping (psychology)|cope]] with continuous combat. Common symptoms include [[hypervigilance]], [[Flashback (psychological phenomenon)|flashbacks]], avoidant behaviors, anxiety, anger, and depression.<ref name="psycho-prat">{{cite web | url = http://www.psycho-prat.fr/index.php?module=webuploads&func=download&fileId=2963_0 | title = Psychological Disorders | archive-url = https://web.archive.org/web/20081204123458/http://www.psycho-prat.fr/index.php?module=webuploads&func=download&fileId=2963_0 | archive-date=4 December 2008 | work = Psychologie Anglophone, Cours de Madame Lacroix }}{{unreliable source?|date=July 2023}}</ref> In addition, individuals may experience sleep disturbances.<ref>{{cite journal | vauthors = Shalev A, Liberzon I, Marmar C | title = Post-Traumatic Stress Disorder | journal = The New England Journal of Medicine | volume = 376 | issue = 25 | pages = 2459–2469 | date = June 2017 | pmid = 28636846 | doi = 10.1056/NEJMra1612499 }}</ref> People who have PTSD often try to detach themselves from their friends and family and have difficulty maintaining these close relationships. There are a number of treatments that form the basis of the care plan for those with PTSD; such treatments include [[cognitive behavioral therapy]] (CBT), prolonged exposure therapy, stress inoculation therapy, medication, psychotherapy, and support from family and friends.<ref name="Barker2003"/>

[[Post-traumatic stress disorder]] research began with US military veterans of the Vietnam War, as well as natural and non-natural disaster victims. Studies have found the degree of exposure to a disaster to be the best predictor of [[Post-traumatic stress disorder|PTSD]].<ref>{{cite book|title = Posttraumatic Stress Disorder|url = https://archive.org/details/posttraumaticstr0000full|url-access = limited| vauthors = Fullerton C |publisher = American Psychiatric Press Inc.|year = 1997|isbn = 978-0-88048-751-1|location = Washington, D.C.|pages = [https://archive.org/details/posttraumaticstr0000full/page/8 8]–9}}</ref>