...the vast majority of these [dissociative identity disorder] patients have subtle presentations characterized by a mixture of dissociative and PTSD symptoms embedded with other symptoms, such as posttraumatic depression, substance abuse, somatoform symptoms, eating disorders, and self-destructive and impulsive behaviors.2,10
A history of multiple treatment providers, hospitalizations, and good medication trials, many of which result in only partial or no benefit, is often an indicator of dissociative identity disorder or another form of complex PTSD.

Bethany L. Brand