What Is PTSD — and How Is It Treated?
Post-Traumatic Stress Disorder is one of the most talked-about mental health conditions — and one of the most misunderstood. It’s commonly associated with combat veterans, but PTSD can follow any experience in which someone felt their life or safety was at serious risk, or in which they witnessed that happening to someone else.
Understanding what PTSD actually is, what it looks like, and what evidence-based treatment involves matters — both for people who may be experiencing it themselves and for the people who care about them.
Table of Contents
- What PTSD Actually Is
- What Causes PTSD
- What PTSD Symptoms Look Like
- Who Gets PTSD — and Who Doesn’t
- PTSD and Substance Use
- How PTSD Is Treated
- When IOP or PHP Is Appropriate for PTSD
- Frequently Asked Questions
- Next Steps
What Is PTSD — and How Is It Treated?
What PTSD Actually Is
Post-Traumatic Stress Disorder is a psychiatric condition that develops in some people following exposure to a traumatic event — one involving actual or threatened death, serious injury, or sexual violence. The defining feature of PTSD is that the nervous system remains in a state of alert long after the threat has passed, producing symptoms that significantly interfere with daily life.
PTSD is not a sign of weakness or an inability to cope. It’s a physiological response to overwhelming experience — one that reflects how the brain and nervous system process and store threat-related memories. NIMH’s PTSD overview describes the neurobiological mechanisms that underlie PTSD symptoms and why they persist after the traumatic event itself has ended.
Approximately 7–8% of the U.S. population will experience PTSD at some point in their lives, according to NIMH’s PTSD statistics. It’s among the most prevalent mental health conditions in the country — and one of the most treatable when the right approach is applied.
What Causes PTSD
PTSD can develop following a wide range of traumatic experiences, including:
- Combat exposure and military service
- Sexual assault or childhood sexual abuse
- Physical assault or domestic violence
- Serious accidents — car accidents, workplace accidents, natural disasters
- Childhood neglect or physical abuse
- Sudden or violent loss of a loved one
- Medical trauma — emergency procedures, life-threatening illness, traumatic birth
- Witnessing violence or death, including as a first responder or emergency worker
PTSD can also develop following repeated exposure to traumatic material — a pattern called complex PTSD or C-PTSD — which is common among first responders, healthcare workers, and people who experienced ongoing childhood abuse or neglect. HHS’s trauma-informed care resources describe how repeated or developmental trauma affects the nervous system differently than single-incident trauma.
What PTSD Symptoms Look Like
PTSD symptoms fall into four main categories:
1. Intrusion — the traumatic event keeps breaking into present experience in ways that feel involuntary and uncontrollable. This includes:
- Flashbacks — vivid, intrusive re-experiencing of the traumatic event, sometimes indistinguishable from present reality
- Nightmares related to the trauma
- Distressing memories that arise without warning
- Intense psychological or physical distress when exposed to cues that remind you of the trauma
2. Avoidance — active effort to stay away from anything connected to the traumatic experience. This includes avoiding thoughts or feelings related to the trauma, as well as external reminders — places, people, situations, or conversations that might trigger memories.
3. Negative changes in thinking and mood — persistent negative beliefs about oneself or the world (“I am permanently damaged,” “nowhere is safe”), distorted blame, persistent negative emotions (shame, fear, anger, guilt), feeling detached from others, loss of interest in activities, inability to experience positive emotions.
4. Changes in arousal and reactivity — the nervous system remaining on high alert long after the threat has passed. This includes irritability or angry outbursts, reckless or self-destructive behavior, hypervigilance, exaggerated startle response, difficulty concentrating, and sleep disturbance. The American Psychiatric Association’s PTSD overview covers diagnostic criteria and symptom categories in full.
Who Gets PTSD — and Who Doesn’t
Not everyone who experiences a traumatic event develops PTSD — and this is worth understanding, because the people who do develop it sometimes feel that their reaction means they are weaker or less resilient than others who went through similar experiences.
Whether someone develops PTSD following trauma is influenced by a range of factors: the severity and duration of the traumatic experience, the presence of prior trauma, the level of social support immediately following the event, neurobiological factors, and whether the person had pre-existing mental health conditions. None of these are under conscious control. NAMI’s PTSD resource addresses risk and resilience factors in depth.
PTSD is not a measure of how hard the trauma was or how strong the person is. It’s a measure of what happened to the nervous system — and the nervous system can be treated.
PTSD and Substance Use
PTSD and substance use disorders co-occur at very high rates. People with PTSD are significantly more likely to use alcohol, opioids, or other substances — often as a way of managing intrusion symptoms, dampening hyperarousal, or numbing the emotional pain associated with trauma memories. NIMH’s research on co-occurring conditions describes this as one of the most common co-occurring combinations in behavioral health treatment.
The challenge is that substance use, while offering short-term relief from PTSD symptoms, tends to worsen the underlying condition over time — disrupting sleep, increasing emotional reactivity, and interfering with the nervous system’s ability to process traumatic memories. Treating PTSD effectively often requires addressing substance use simultaneously, which is why integrated treatment approaches that treat both conditions in the same clinical setting are strongly preferred. Our post on co-occurring conditions covers how this kind of integrated treatment works in practice.
How PTSD Is Treated
PTSD is among the most treatable mental health conditions when the right evidence-based approach is applied. The primary treatment modalities include:
Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) — a structured form of CBT specifically designed to address trauma-related thoughts, avoidance behaviors, and emotional responses. It’s one of the most extensively researched and validated treatments for PTSD. APA’s clinical practice guidelines for PTSD identify trauma-focused CBT as a first-line recommended treatment.
EMDR (Eye Movement Desensitization and Reprocessing) — a structured therapy that uses bilateral stimulation (typically eye movements) to help the brain reprocess traumatic memories so they lose their overwhelming emotional charge. APA also identifies EMDR as a recommended treatment for PTSD, with a strong evidence base across a wide range of trauma types.
DBT for PTSD — Dialectical Behavior Therapy is particularly relevant for people with PTSD who experience high emotional intensity, self-harm urges, or difficulty tolerating distress. The distress tolerance and emotion regulation modules directly address the hyperarousal and emotional flooding that characterize PTSD. DBT is often used alongside trauma-focused therapies rather than as a standalone treatment for PTSD.
Medication — SSRIs and SNRIs are FDA-approved for PTSD treatment and are effective for many people, particularly for managing hyperarousal and intrusion symptoms. Medication is typically used in combination with psychotherapy rather than as a standalone treatment. NIMH’s PTSD treatment overview summarizes the evidence base for medication and therapy combinations.
When IOP or PHP Is Appropriate for PTSD
Weekly outpatient therapy is often sufficient for PTSD with moderate symptom severity and adequate daily functioning. When PTSD is more severe — when symptoms are significantly impairing daily life, when substance use is part of the picture, or when weekly therapy isn’t producing meaningful progress — a higher level of care is clinically appropriate.
Our IOP and PHP programs treat PTSD as part of a comprehensive clinical picture that includes individual therapy, group processing, skills development, and psychiatric support. The structured format and frequency of sessions in IOP and PHP allow trauma-focused work to proceed more intensively than weekly therapy permits — which is particularly relevant for people who have been in treatment without adequate progress.
If you’re a veteran or active-duty service member, our program has experience treating combat-related PTSD and works with VA Community Care and TRICARE. Learn more about our mental health programming for first responders and veterans.
Frequently Asked Questions
Next Steps
If you recognize what’s described here — in yourself or someone you care about — reaching out for a clinical evaluation is the right next step. PTSD is treatable, and the distance between where you are now and meaningful relief is shorter than most people expect when the right approach is applied.
Our team in Brentwood treats PTSD as part of comprehensive behavioral health care — including co-occurring conditions, trauma informed individual therapy, group programming, and psychiatric support. Reach out here to start a conversation, or learn more about our PTSD treatment approach, IOP, and PHP programs.
