Among respondents with PTSD-AD, the lifetime prevalence of any psychiatric disorder, any Axis I disorder, and any Axis II disorder were 96.39%, 94.69% and 72.41%, respectively. Individuals with lifetime PTSD-AD had increased odds of having almost all types of Axis I and Axis II disorders, with a few exceptions: (a) compared with individuals with PTSD only, individuals with comorbid PTSD-AD had similar rates of lifetime major depressive disorder, bipolar II, conduct disorder and dependent personality disorder; and, (b) compared with individuals with AD only, individuals with comorbid PTSD and AD had similar rates of lifetime conduct disorder and pathological gambling.