 Primary outcome measures will assess trauma-related nightmares, sleep disturbance and change in global clinical status: these will include the CAPS 59 Recurrent Distressing Dreams item, the PSQI 60 and the CGIC 58 score. Secondary outcome measures will include total CAPS score, the CAPS subscale scores Reexperiencing Intrusions, AvoidanceNumbing, and Hyperarousal, the Nightmare Frequency Questionnaire NFQ, Insomnia Severity Index, and measures of depressive signs and symptoms, quality of life, and number of study days completed. 