Post-traumatic stress disorder
In 1980, the American Psychiatric Association officially added post-traumatic stress disorder to its third edition of the Diagnostic and Statistical Manual. This decision followed decades of observing soldiers returning from Vietnam with symptoms that did not fit existing diagnoses. Before this moment, similar conditions carried names like shell shock during World War I or combat neurosis in later conflicts. Ancient Assyrian records from between 1300 and 600 BCE describe soldiers who faced immense challenges reconciling their wartime actions with civilian life after three-year rotations. These historical accounts suggest the human mind has always struggled with the aftermath of extreme violence. The term itself emerged from a convergence of clinical observation and political pressure from veterans groups. Psychiatrist Jonathan Shay proposed that Lady Percy's soliloquy in William Shakespeare's Henry IV Part 1, written around 1597, accurately described the symptom constellation we now recognize as PTSD. The condition remained largely invisible until the Vietnam War forced a reckoning with the psychological cost of modern warfare.
Neuroscientist Dr. Rachel Yehuda researched how psychological trauma travels across generations through studies on Holocaust survivors and their offspring. Her work focused on a specific stress gene called FKBP5 linked to PTSD development. Research indicates approximately 30% of the variance in susceptibility to PTSD is caused by genetics alone. During traumatic experiences, high levels of stress hormones suppress hypothalamic activity which may be a major factor toward developing the disorder. Individuals diagnosed with PTSD show low secretion of cortisol and high secretion of catecholamines in urine. This creates a norepinephrine-to-cortisol ratio higher than comparable non-diagnosed individuals. The amygdala becomes strongly involved in forming emotional memories especially fear-related ones. Meanwhile the hippocampus which places memories in correct context of space and time remains suppressed during high stress. A 2007 study found Vietnam War combat veterans with PTSD showed a 20% reduction in volume of their hippocampus compared to veterans without such symptoms. These biological changes create deep neurological patterns that persist long after the triggering event ends.
In the United States about 3.5% of adults have post-traumatic stress disorder in a given year while 9% develop it at some point in their lives. Global rates during a given year range between 0.5% and 1% in much of the rest of the world. Higher rates occur in regions of armed conflict where prevalence can reach up to 86% among refugee populations. Women are more likely to experience interpersonal violence leading to PTSD while men face higher rates of combat exposure. The National Comorbidity Survey Replication estimated lifetime prevalence among adult Americans is 6.8%. More than 60% of both men and women experience at least one traumatic event in their life. Eighty-eight percent of men and 79% of women with lifetime PTSD have at least one comorbid psychiatric disorder. Major depressive disorder affects 48% of men and 49% of women while lifetime alcohol use disorder impacts 51.9% of men and 27.9% of women. In Vietnam War studies 15% of male veterans and 9% of female veterans had PTSD at time of study. For the 2.16 million U.S. troops deployed in combat zones between 2001 and 2010 total estimated two-year costs of treatment for combat-related PTSD ranged from $1.54 billion to $2.69 billion.
The DSM-III published in 1980 classified post-traumatic stress disorder as an anxiety disorder before reclassifying it as a trauma-and-stressor-related disorder in the DSM-5 released in 2013. International Classification of Diseases version 11 contains three components: re-experiencing avoidance and heightened sense of threat. Screening instruments include the PTSD Checklist for DSM-5 which monitors severity of symptoms and response to treatment over time. Clinician-administered interviews like the CAPS-5 provide official diagnosis according to established criteria. Symptoms must persist longer than one month after the inciting traumatic event to be classified as PTSD rather than acute stress disorder. Assessment should consider frequency of traumatic events experienced and potential for over-reporting or under-reporting due to stigma. Cultural differences affect how symptoms manifest with some communities expressing distress through somatic complaints rather than psychological language. Anthropologists note that terms like piDaa in Nepal align to suffering but carry social stigma indicating need for culturally appropriate interventions. The condition remains difficult to diagnose because most diagnostic criteria are subjective and overlap with other mental disorders.
Eye movement desensitization and reprocessing developed by Francine Shapiro involves voluntary rapid eye movements while focusing on memories about particular trauma. Therapists use hand movements to guide eyes backward and forward though hand-tapping or tones can also facilitate the process. A 2018 systematic review found moderate strength of evidence supporting EMDR efficacy for reduction in PTSD symptoms and loss of diagnosis. Cognitive behavioral therapy serves as standard of care by the United States Department of Defense for treating veterans. Prolonged exposure therapy assists survivors to re-experience distressing trauma-related memories to facilitate habituation. Selective serotonin reuptake inhibitors including sertraline fluoxetine paroxetine and venlafaxine have shown small to modest benefit over placebo. Benzodiazepines remain controversial as they may worsen outcomes and increase risk of developing PTSD two to five times. MDMA-assisted psychotherapy has limited evidence for efficacy despite FDA rejection in 2024 citing trial design concerns. Canada regulates limited distribution of MDMA upon application to Health Canada while Australia allows prescription by authorized psychiatrists.
Ethnopsychology studies in Nepal found cultural idioms like piDaa align to suffering but people experiencing it are considered paagal meaning mad subject to negative social stigma. Displaced people from Burundi experienced depression and anxiety yet few presented specific PTSD symptoms noted in Western criteria. Sudanese refugees relocated in Uganda focused on material effects like lack of food shelter and healthcare rather than psychological distress. Anthropologists argue applying DSM-III diagnostic criteria cross-culturally constitutes category fallacy due to Euro-American paradigm limitations. Many cultures designate trauma effects as affliction of spirit using idioms such as soul loss or weak heart instead of mind-body approaches. Collectivist cultures emphasize healing through familial cultural and religious activities avoiding stigma accompanying individual diagnosis. The term post-traumatic stress disorder entered the DSM in 1980 around American veterans of Vietnam War creating an Americanized framework. Critics note that what characterizes PTSD in Western society may not translate across other cultures globally. Social disability risk increased seventeen-fold when categorized as having probable PTSD among World Trade Center workers following September 11 attacks. These findings highlight how cultural context shapes both expression of trauma and response to interventions.
Continue Browsing
Common questions
When was post-traumatic stress disorder officially added to the Diagnostic and Statistical Manual?
The American Psychiatric Association officially added post-traumatic stress disorder to its third edition of the Diagnostic and Statistical Manual in 1980. This decision followed decades of observing soldiers returning from Vietnam with symptoms that did not fit existing diagnoses.
What percentage of variance in susceptibility to PTSD is caused by genetics alone?
Research indicates approximately 30% of the variance in susceptibility to PTSD is caused by genetics alone. Neuroscientist Dr. Rachel Yehuda studied how psychological trauma travels across generations through specific stress genes like FKBP5 linked to PTSD development.
How many adults in the United States have post-traumatic stress disorder in a given year?
In the United States about 3.5% of adults have post-traumatic stress disorder in a given year while 9% develop it at some point in their lives. The National Comorbidity Survey Replication estimated lifetime prevalence among adult Americans is 6.8%.
Which therapy involves voluntary rapid eye movements to treat post-traumatic stress disorder?
Eye movement desensitization and reprocessing developed by Francine Shapiro involves voluntary rapid eye movements while focusing on memories about particular trauma. A 2018 systematic review found moderate strength of evidence supporting EMDR efficacy for reduction in PTSD symptoms and loss of diagnosis.
When was post-traumatic stress disorder reclassified as a trauma-and-stressor-related disorder?
The DSM-III published in 1980 classified post-traumatic stress disorder as an anxiety disorder before reclassifying it as a trauma-and-stressor-related disorder in the DSM-5 released in 2013. Symptoms must persist longer than one month after the inciting traumatic event to be classified as PTSD rather than acute stress disorder.