Prolonged Exposure (PE) therapy is one of the most evidence-based and widely validated treatments for PTSD. It directly addresses avoidance — one of the core mechanisms that maintains PTSD — through systematic, gradual approach to feared trauma memories and situations.
What Is Prolonged Exposure?
Prolonged Exposure was developed by Dr. Edna Foa at the University of Pennsylvania and has been studied in dozens of randomized controlled trials. It is endorsed by the American Psychological Association, the Department of Veterans Affairs, and the Department of Defense as a first-line treatment for PTSD. The evidence base for PE in military and veteran populations is particularly strong, with effect sizes comparable to or exceeding those of other leading treatments.
PE is grounded in emotional processing theory — the understanding that traumatic memories cause ongoing distress when they are incompletely processed and when avoidance prevents the natural habituation that would otherwise occur with exposure to feared stimuli. By systematically approaching rather than avoiding trauma memories and reminders, PE allows natural processing to occur and distress to diminish.
The Two Components of Prolonged Exposure
Imaginal exposure involves revisiting the traumatic memory in a structured, controlled therapeutic environment. The client recounts the traumatic experience aloud, in present tense, while the therapist supports them through the process. Sessions are recorded so the client can listen to them between appointments — a crucial element that facilitates processing outside of sessions. Over multiple exposures, the emotional charge of the memory diminishes through habituation.
In vivo exposure involves systematic, gradual approach to avoided real-world situations — people, places, activities, or sensory triggers associated with the trauma that have been avoided due to PTSD. A hierarchy of avoided situations is constructed, from least to most distressing, and the client works through this hierarchy progressively between sessions.
Who Is a Good Candidate for PE?
PE is most appropriate for adults with PTSD related to a discrete traumatic event or a defined period of trauma exposure, who have adequate distress tolerance to approach difficult material, and who are not actively suicidal, actively abusing substances, or significantly dissociative. It has strong evidence across trauma types: combat trauma, sexual assault, accidents, and other civilian trauma. It is less routinely indicated as a first-line approach for Complex PTSD from prolonged developmental trauma, where an extended stabilization phase is usually required before exposure work is appropriate. For veteran and military populations, PE has one of the largest and most rigorous evidence bases of any PTSD treatment.
PE Within an Integrative Treatment Approach
PE is a powerful tool and not always the right first choice. As part of a comprehensive PTSD treatment approach, it works best when the client has adequate stabilization and distress tolerance. When those conditions are present, PE can produce rapid and lasting symptom reduction. Dr. Flores uses PE principles within an integrative framework, selecting and sequencing approaches based on the individual’s specific presentation and treatment readiness. Request a consultation to discuss whether PE is appropriate for your situation.