“…Studies suggest that 75% of individuals with PTSD meet criteria for at least one additional psychological disorder (Kessler et al, 2005). Depressive disorders, substance use disorders (SUDs), and anxiety disorders are the most commonly comorbid (Brady, Killeen, Brewerton, & Lucerini, 2000). One study of veterans with PTSD reported rates of 48.1% comorbidity with depression, 21.9% comorbidity with SUDs, 13.9% comorbidity with anxiety disorders, and 8.8% comorbidity with schizophrenia and bipolar disorders (Trivedi et al, 2015).…”