Prolonged Exposure Therapy (PE) and Eye Movement Desensitization and Reprocessing (EMDR) are both evidence-based treatments for post-traumatic stress disorder (PTSD). Both approaches aim to help individuals reduce symptoms related to traumatic events, such as flashbacks, avoidance behaviors, and intrusive thoughts. However, there are some differences between the two approaches:

• Focus: PE primarily focuses on exposing individuals to trauma-related thoughts, feelings, and situations in a controlled and gradual manner. The goal of PE is to help individuals confront and overcome their fears associated with the traumatic event. EMDR, on the other hand, focuses on processing the traumatic memory through bilateral stimulation, such as eye movements or tapping, which is thought to stimulate the brain's information processing system and help integrate the traumatic memory.
• Structure: PE is a more structured and longer-term therapy, typically involving 8-15 weekly therapy sessions. EMDR can be shorter in duration, with some individuals experiencing improvement in as few as three sessions.
• Techniques: PE primarily uses exposure and cognitive-behavioral therapy techniques, such as relaxation training and retelling the traumatic story. EMDR uses bilateral stimulation in addition to other therapeutic techniques, such as guided imagery and cognitive restructuring.
• Evidence: Both PE and EMDR have strong empirical support for their efficacy in treating PTSD, and are recommended by the U.S. Department of Veterans Affairs and the International Society for Traumatic Stress Studies as evidence-based treatments for PTSD.

Ultimately, the choice between PE and EMDR will depend on the individual's specific needs, preferences, and the clinical judgment of their therapist. It's also possible that a combination of the two approaches may be used in some cases.