Accelerated Treatment for Co-occurring Insomnia, Nightmares, and PTSD

This study is a two-arm individually randomized group treatment clinical trial evaluating behavioral therapies for insomnia, nightmares, and PTSD. The study will compare cognitive-behavioral therapy for insomnia and nightmares to sleep hygiene (Control), both integrated with Written Exposure Therapy for PTSD and delivered in an accelerated (i.e., 5-day) group treatment format, preceded and followed by individual treatment sessions. 160 participants will be randomized into one of two study conditions.

The aims of the study are: 1. Determine the efficacy of accelerated cognitive behavioral therapy for insomnia and nightmares (CBTi+n) integrated with Written Exposure Therapy (WET) for PTSD for improving insomnia symptoms among military personnel with clinically significant symptoms of insomnia, nightmares, and PTSD. 2. Determine the efficacy of accelerated CBTi+n integrated with WET for improving nightmare symptoms among military personnel with clinically significant symptoms of insomnia, nightmares, and PTSD. Exploratory Aim: Determine the efficacy of accelerated CBTi+n integrated with WET for improving PTSD symptoms among military personnel with clinically significant symptoms of insomnia, nightmares, and PTSD.