Prolonged Exposure for PTSD

Core idea

PE is built on emotional processing theory: PTSD persists because the fear network is never disconfirmed — avoidance prevents the brain from learning that the memory is not the event and that reminders are not dangerous. PE pairs imaginal exposure (repeated narration of the trauma memory) with in vivo exposure (approaching avoided real-world situations) over 8–15 weekly 90-minute sessions.

Key concepts

Emotional processing theory

Pathological fear structure needs activation + corrective information to change.

Imaginal exposure

Repeated, present-tense narration of the trauma memory with eyes closed.

In vivo exposure

Real-world approach to safe-but-avoided situations, tracked on a SUDS hierarchy.

Hot spots

The most distressing moments of the memory — focused on after initial passes.

Between-session listening

Client listens to the imaginal recording daily — the core homework.

What a session looks like

1. 1
   Sessions 1–2

   Psychoeducation, breathing retraining, build in vivo hierarchy.
2. 2
   Session 3

   First imaginal exposure (30–45 min), then process; assign daily listening.
3. 3
   Sessions 4+

   Continue imaginal + new in vivo assignments; identify hot spots.
4. 4
   Mid-treatment

   Hot-spot work — slow, repeated narration of the worst moments.
5. 5
   Final sessions

   Final imaginal of the full memory; consolidation; relapse prevention.

Signature techniques

Evidence base

VA/DoD first-line treatment for PTSD alongside CPT and EMDR. Largest evidence base of any trauma therapy. Effect sizes large; gains durable at long-term follow-up.

Common pitfalls

• ▸Cutting imaginal short to relieve client (or therapist) distress — undermines the mechanism.
• ▸Skipping daily listening — homework is not optional.
• ▸Letting in vivo hierarchy stay too easy; safety behaviors must be dropped.
• ▸Confusing PE with general trauma talk — fidelity to the protocol matters.

Where to go next