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Trauma and PTSD: Dispelling Myths, Inspiring Hope

NAMI’s new graphic resource describes the differences between trauma and PTSD, offering information on symptoms, treatment, stress reduction strategies, and important myths vs. facts – with quotes from real people.

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Traumatic events — such as a motor vehicle crash, assault, military combat or natural disasters — can have lasting effects on a person’s mental health. While many people will have short term responses to life-threatening events, some will develop longer term symptoms that can lead to a diagnosis of posttraumatic stress disorder (PTSD). PTSD symptoms often co-exist with other conditions such as substance use disorders, depression and anxiety. A comprehensive health evaluation which can result in an individualized treatment plan is optimal.  

Trauma is a deeply distressing or disturbing experience that overwhelms an individual’s ability to cope, often leading to lasting emotional, psychological, or physical effects. Trauma can result from a wide range of experiences, including but not limited to physical, emotional, or sexual abuse, accidents, natural disasters, violence, loss, or significant life changes. It also includes systemic and interpersonal experiences such as racism, discrimination, and marginalization, which can create ongoing harm and stress. Trauma can affect anyone, regardless of their background, and its impact can vary depending on the individual’s resilience, support systems, and the nature of the event. Healing from trauma often requires time, support, and appropriate interventions tailored to the individual’s experiences.  

About 4.1% of the U.S. adult population (over 8 million people) experiences PTSD. Both older and more recent research suggest that women are more likely to experience PTSD than men. 

A brief history of the diagnosis of PTSD  

Traumatic events have been observed to have impacts on people for some time and are described as early as in Homer’s The Iliad written in about the 8th century. A formal diagnosis of PTSD was introduced with the launch of the third edition of the Diagnostic and Statistical Manual (DSM) published by the American Psychiatric Association in 1980. This was a direct result of many Vietnam Veterans returning with a constellation of symptoms that fit that diagnosis. Advocacy from rape victim groups also helped conceptualize PTSD to be more than a war injury. 

Prior to that, “shell shock” (World War I) and “battle fatigue” (World War II) were the ways professionals conceptualized the impact of war trauma on soldiers. Over time it became clear that a subset of people exposed to the same life-threatening experiences would have similar symptoms. A diagnosis of PTSD added to the understanding of traumatic events as a cause of these symptoms and helped to focus research in this area. 

In the most recent version of the DSM, PTSD has been moved into its own category Trauma and Stressor Related Disorders rather than being included as a type of anxiety disorder. This grew out of the research showing that anger, depression or dissociation may also result in traumatic responses and were more complex than anxiety symptoms. 

Causes 

PTSD can occur at any age and is directly associated with exposure to trauma. Adults and children who have PTSD represent a relatively small portion of those who have been exposed to trauma. This difference is not yet well understood but we do know that there are risk factors that can increase a person’s likelihood of developing PTSD. Risk factors can include prior experiences of trauma, having limited social or family support, dealing with other stressors before or after the event, or a personal or family history of mental illness or substance use.  

We do know that for some, our “fight-or-flight” biological instincts, which can be lifesaving during a crisis, can leave us with ongoing symptoms. Because the body is busy increasing its heart rate, pumping blood to muscles, preparing the body to fight or flee, all our physical resources and energy are focused on getting out of harm’s way. Therefore, there has been discussion that the posttraumatic stress response may not a disorder per se, but rather a variant of a human response to trauma. 

PTSD can be considered a consequence of our body’s inability to effectively return to “normal” in the months after its extraordinary response to a traumatic event. 

Related Conditions 

Someone with PTSD may have additional mental health conditions, including: 

A person with PTSD may also experience thoughts of suicide or suicide attempts.  

The presence of a co-occurring condition can make it more challenging to treat PTSD. It’s important to know that successfully treating PTSD almost always also improves the symptoms of these related illnesses and successful treatment of the related illnesses usually improves PTSD symptoms. 

 

Reviewed and updated May 2025 

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