Epidemiological evidence indicates that women are twice as likely to suffer from PTSD than men (Rowe, Sperlich, Cameron, and Seng, 2014). McGovern et al. (2015) assert that PTSD is more likely to affect individuals with co-occurring substance use disorder. Co-morbidity rates are significantly increased when patients suffer from both PTSD and substance use disorder (McGovern et al., 2015).&nbsp