Prolonged Exposure Therapy (PE)

Reviewed by the HeyPsych Medical Review Board

Board-certified psychiatrists and mental health professionals

Published September 16, 2026•Updated September 16, 2026

Indications

Primary Indications

Post Traumatic Stress DisorderAcute Stress Disorder

Mechanism

PE works by activating traumatic memories in a safe, therapeutic environment, allowing individuals to process and emotionally integrate them. Repeated imaginal and in vivo exposure reduces conditioned fear responses and avoidance, leading to desensitization and reappraisal of trauma-related cues.

Protocol

Preparation

Initial assessment of trauma history, symptom severity, and patient readiness; psychoeducation on trauma and avoidance.

Procedure

Imaginal exposure: The patient recounts the traumatic memory in detail during sessions, recording the narrative for homework review.
In vivo exposure: Gradual confrontation with avoided, trauma-related but safe reminders in daily life.
Processing: Therapist helps the patient reflect on exposure experiences, correcting maladaptive beliefs and integrating new perspectives.

Frequency: Typically weekly.

Duration: 8–15 sessions of 60–90 minutes.

Session Structure

Pre-Session

Review of homework, monitoring distress levels.

Treatment Phase

Engagement in imaginal exposure or in vivo exposure planning and processing.

Post-Session

Reflection on experience, assignment of exposure-based homework.

Expected Outcomes

Immediate

Heightened emotional distress during initial sessions
Increased trauma awareness

Short Term

Reduced avoidance
Improved ability to manage trauma cues

Long Term

Significant reduction in PTSD symptoms
Improved functioning and quality of life

Side Effects

common

Emotional discomfort
Temporary increase in anxiety or distress

rare

Dropout due to distress
Re-traumatization if improperly delivered

Contraindications

absolute

Uncontrolled psychosis
High suicide risk

relative

Severe dissociative symptoms
Unstable substance use disorder

Patient Selection

ideal candidates

Patients with PTSD related to a specific trauma
Individuals with avoidance behaviors and intrusive memories
Patients motivated for trauma-focused therapy

screening required

Comprehensive trauma assessment
Readiness evaluation for exposure work

Training Requirements

practitioner

Licensed mental health professionals trained in PE

facility

Outpatient clinics
Veterans Affairs medical centers
Private practices

Research Evidence

Key Studies

Numerous RCTs confirm PE’s efficacy for PTSD across trauma types and populations.
VA/DoD guidelines endorse PE as a first-line treatment for PTSD.

Limitations

Dropout rates can be high due to distress; less effective for patients with high dissociation or complex trauma unless adapted.

Cost Considerations

typical session cost: $120–$250 per session

total treatment cost: $1,200–$3,500 for full protocol

insurance coverage: Typically covered under mental health benefits

cost effectiveness: Cost-effective due to durable symptom improvement and reduced healthcare utilization

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Integration Support

Concurrent Therapies

Medication management (SSRIs, prazosin)
Supportive therapy

Special Populations

Clinical Notes

Therapists must prepare patients for initial symptom exacerbation.
Audio recording of imaginal exposure is a key component of PE.
Close monitoring for suicidality and dissociation is essential.

This treatment information is for educational purposes only. Treatment decisions should be made in consultation with qualified healthcare professionals based on individual circumstances, symptoms, and medical history. Do not attempt treatment without professional guidance.

Interested in this treatment?

This information is for educational purposes. Always consult with a qualified healthcare provider before starting any new treatment.

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