Post-Traumatic Stress Disorder (PTSD)

What is PTSD?

PTSD is a trauma- and stressor-related disorder that can follow exposure to actual or threatened death, serious injury, or sexual violence. That exposure can be direct, witnessed, learned about (when it happened to someone close to you), or the result of repeated work exposure, as happens with first responders and combat medics.

Most people who go through a frightening event feel shaken for a while and then gradually recover. PTSD is diagnosed when the symptoms persist for more than a month, cause real distress or impairment, and are not better explained by another cause. According to the National Institute of Mental Health, about 6 percent of U.S. adults will have PTSD at some point in their lives, and women are diagnosed roughly twice as often as men.

If you or someone you know is thinking about suicide or self-harm, help is available around the clock. Call or text 988 to reach the Suicide & Crisis Lifeline. Veterans and service members can dial 988 and then Press 1 for the Veterans Crisis Line, or text 838255.

What are the symptoms of PTSD?

The DSM-5-TR, the diagnostic manual clinicians use in the United States, groups PTSD symptoms into four clusters. A diagnosis requires symptoms from each cluster that begin or worsen after the trauma and continue for at least a month.

• Intrusion: unwanted memories, distressing dreams, flashbacks in which the event feels like it is happening again, and intense physical or emotional reactions to reminders.
• Avoidance: steering clear of thoughts, feelings, people, places, or activities that bring the trauma to mind.
• Negative changes in thoughts and mood: persistent shame, guilt, or fear; distorted beliefs about yourself or the world; feeling detached from others; loss of interest; and trouble recalling key parts of the event.
• Changes in arousal and reactivity: irritability or angry outbursts, hypervigilance, an exaggerated startle response, reckless behavior, difficulty concentrating, and disrupted sleep.

What causes PTSD and who is at risk?

PTSD begins with a traumatic event, but exposure alone does not explain who develops it. Biology, prior mental health, the nature of the trauma, and what happens afterward all shape the risk. Events involving interpersonal violence, such as assault or combat, carry higher risk than natural disasters or accidents.

Risk goes up with the severity and duration of the trauma, a history of earlier trauma or abuse, existing anxiety or depression, a family history of mental illness, and limited social support afterward. Protective factors matter too: reaching out to others, having people who listen without judgment, and getting help early all lower the odds that acute distress hardens into a lasting disorder.

PTSD is often described as a veteran's condition, and combat is a genuine cause. But car crashes, medical emergencies, childbirth complications, community violence, and childhood abuse are far more common triggers across the general population.

PTSD vs. acute stress disorder vs. complex PTSD

Three related diagnoses are easy to confuse. Acute stress disorder describes trauma symptoms in the first three days to one month after the event; if symptoms persist past one month, the diagnosis becomes PTSD. Acute stress disorder is partly meant to flag people who may be heading toward PTSD so they can get support sooner.

Complex PTSD (CPTSD) is a term you will see often, and the distinction is worth getting right. CPTSD is a formal diagnosis in the World Health Organization's ICD-11, where it includes the core PTSD symptoms plus three added features grouped as disturbances in self-organization: trouble regulating emotions, a persistently negative self-concept, and difficulty maintaining relationships. It typically follows prolonged, repeated trauma such as childhood abuse or captivity.

Here is the key point most articles miss: complex PTSD is not a separate diagnosis in the DSM-5-TR used in the United States. A U.S. clinician cannot formally diagnose CPTSD under current DSM criteria; they may instead diagnose PTSD, sometimes with the dissociative subtype, and address the added symptoms in treatment. The experience is real either way, and the treatments overlap heavily.

How is PTSD treated?

PTSD responds well to treatment, and trauma-focused psychotherapy is the front-line choice. The 2023 VA/DoD Clinical Practice Guideline for the Management of PTSD and Acute Stress Disorder gives its strongest recommendation to a small group of individual, manualized, trauma-focused therapies over medication when both are available.

The therapies with the strongest evidence share a common thread: they help you process the memory and revise the stuck beliefs that keep the alarm system switched on.

• Cognitive Processing Therapy (CPT): a structured, roughly 12-session approach that targets the unhelpful beliefs trauma creates about safety, trust, and self-blame.
• Prolonged Exposure (PE): an 8-to-15 session therapy that gradually and safely reduces avoidance by revisiting the memory and approaching feared but safe situations.
• Eye Movement Desensitization and Reprocessing (EMDR): a therapy that pairs brief attention to the trauma memory with guided eye movements or other bilateral stimulation to reprocess it.
• Medication: SSRIs such as sertraline and paroxetine are FDA-approved for PTSD and are a reasonable option, especially when trauma-focused therapy is not accessible or preferred. Your prescriber decides what fits your history.

What a first trauma-focused appointment looks like

Starting therapy for trauma can feel daunting, so it helps to know the shape of it. A good first session is mostly conversation, not exposure. The clinician takes a history, asks about your symptoms and safety, explains how the treatment works, and answers your questions. You are not required to recount the traumatic event in detail on day one.

From there, trauma-focused therapy is collaborative and paced to what you can tolerate. In CPT, for example, early sessions focus on understanding how the trauma changed your thinking before you write about the event itself. You and your therapist set the pace, and skilled clinicians build in grounding tools so the work stays inside your window of tolerance.

A therapist can help you decide which of these approaches fits your situation, and matching with someone who has real trauma training makes a measurable difference. Ask a prospective provider directly whether they are trained in CPT, PE, or EMDR.

Myths and facts about PTSD

Misconceptions keep people from getting care, so a few corrections are worth stating plainly.

• Myth: only combat veterans get PTSD. Fact: assault, accidents, medical trauma, and childhood abuse are far more common causes across the population.
• Myth: symptoms always start right away. Fact: onset can be delayed by months or even years, especially with a reminder or later stressor.
• Myth: PTSD means you are broken or weak. Fact: it is a normal nervous system response to an abnormal event, and it responds to treatment.
• Myth: talking about the trauma will make it worse. Fact: structured, therapist-guided processing reduces symptoms; unstructured rumination is different from evidence-based treatment.