Psychological Trauma: Theory, Research, Practice, and Policy Vol. 10, Iss. 6,  (Nov 2018): 636-642. Objective: Posttraumatic stress disorder (PTSD) and opioid use disorder (OUD) co-occur at high rates, and this co-occurrence is associated with a range of problems related to mental and physical health. OUD is commonly treated with opioid agonist therapies (OAT), which have been shown to be effective for reducing opiate use and related negative health consequences. Given the high comorbidity of PTSD and OUD, many individuals in OAT have PTSD and continue to experience symptoms of both disorders despite OAT treatment. In this review, the extant literature on PTSD among individuals in OAT is presented.. To read the full article, log in using your MPFT NHS OpenAthens details.