For many primary care providers (PCPs), the most difficult patients to treat are not those with complex physical ailments, but those whose underlying behavioral health struggles remain undetected. Post-Traumatic Stress Disorder (PTSD) is often at the heart of these challenges. While we frequently see patients for chronic pain, insomnia, or treatment-resistant anxiety, we may be missing the root cause. PTSD often goes undiagnosed for years, with patients frequently treated for depression, anxiety, or somatic complaints before the underlying trauma disorder is recognized.
The Ultimate Thief: Understanding the Patient Experience
Undetected PTSD is often the reason why patients initially treated for depression or anxiety fail to improve. To these patients, the disorder is more than a list of symptoms. Here is how one of our patients described it:
"PTSD is the ultimate thief. It steals your will, your joy, and your abilities, all of those things that make a life your own. It cripples the strong, kills the weak, burns a life like a fire gone wild. There is nowhere to hide, no one can reach you. Cycles never end. If you make some progress, it hits you again, harder and from out of nowhere. You must choose to fight or die every day."
This "fire" leads to high medical morbidity, functional impairment, and a high rate of comorbidity with mood disorders and Substance Use Disorders (SUD). Despite this burden, many patients with PTSD never receive effective treatment. PTSD frequently goes undetected in primary care, and even when identified, access to evidence-based treatments may be limited by shortages of trained therapists and specialty mental health services.
Identifying PTSD: The Four Symptom Pillars
Diagnosis begins with recognizing the four distinct types of PTSD symptoms that must last more than a few weeks and significantly impact functioning:
- Reliving the event: Flashbacks or intrusive memories.
- Avoiding reminders: Steering clear of people, places, or thoughts related to the trauma.
- Negative thoughts and feelings: Feeling more cynical, fearful, or detached than before the event.
- Hyperarousal: Feeling constantly "on edge" or easily startled.
While anyone can develop PTSD, risk factors increase with intentional violence (as compared to, say, natural disasters), multiple traumatic events, and combat or sexual assault. Delayed expression of PTSD (symptoms appearing six months or more after trauma) can occur in about 25% of cases.
Screening and Monitoring in Primary Care
Integrating screening into routine visits is essential to closing the diagnostic gap. In collaborative care, behavioral health care manager—a master’s level clinician working directly with the patient—screens with the PC-PTSD-5 (the Primary Care PTSD Screen for DSM-5). It's a rapid five-item tool with scores ranging from 0–5. A cutoff score of 3 is considered a positive screen. When screening, our clinicians also assess for acute suicidality, domestic violence, and substance intoxication or withdrawal.
Once a patient is in treatment, the PCL-5 (PTSD Checklist for DSM-5) is the gold standard for monitoring progress. This 20-item self-report tracks symptoms over the past month.
- Response is defined as a >50% decrease in the PCL-5 score.
- Remission is generally achieved when the score drops below 20.
Treatment: What Works (and What Doesn't)
The good news is that Collaborative Care (integrating behavioral health into the primary care provider) can be highly effective. In one trial, patients engaging in collaborative care—including care manager encounters and psychiatric case reviews—showed a 31% improvement in mental health functioning and a 26% decrease in PTSD symptoms over 12 months.
The Evidence for Medications
For pharmacotherapy, SSRIs (paroxetine and sertraline) and the SNRI venlafaxine have the strongest evidence. Treatment is nuanced; for example, for patients struggling specifically with nightmares or hyperarousal, certain medications can be used as augmentation to a patient’s existing SSRI/SNRI regimen.
What Doesn’t Work
Several commonly prescribed medications are ineffective or potentially harmful for PTSD. Benzodiazepines are strongly discouraged. They do not reduce core PTSD symptoms or improve sleep dysfunction, and they are associated with increased PTSD severity, decreased efficacy of trauma-focused therapy, and increased risk of substance use, depression, and aggression. Other medications with insufficient evidence or recommendations against use include most antipsychotics, divalproex, guanfacine, ketamine, and cannabis products.
Behavioral Interventions
In the primary care setting, clinicians can offer brief evidence-based interventions like Behavioral Activation or Psychoeducation. More intensive specialty therapies include Cognitive Processing Therapy and Prolonged Exposure. Trauma-focused psychotherapy remains the first-line treatment when available. However, in primary care settings where specialty psychotherapy is unavailable, SSRIs produce clinically meaningful improvements and may be feasible for many patients.
Moving Forward
By integrating PTSD screening and evidence-based treatment into the primary care medical home, we can finally reach the patients who have spent years struggling with undiagnosed trauma—and help them reclaim their lives.