Concurrent psychiatric illness in inpatients with post-traumatic stress disorder

The discharge diagnoses of 374 inpatients on a VA Medical Center general psychiatry ward were reviewed. Sixty-three (16.8%) were diagnosed as having posttraumatic stress disorder (PTSD). The mean number of diagnoses was 2.9 for the PTSD group, compared with 1.4 for the non-PTSD patients. The most common comorbid conditions in the PTSD patients were alcohol abuse, unipolar major depression, substance abuse, atypical psychosis, and intermittent explosive disorder. All of these disorders except substance abuse occurred significantly more frequently in the PTSD patients than in those free of PTSD. Schizophrenia and organic mental disorders occurred significantly more frequently in the non-PTSD group. These results suggest a need for thorough psychiatric evaluation in patients with PTSD and the need to evaluate for PTSD when combat veterans present with one of several psychiatric syndromes mentioned above.