Dissociative Identity Disorder

Excerpt

Dissociative identity disorder (DID) is a rare disorder associated with severe behavioral health symptoms. DID was previously known as Multiple Personality Disorder until 1994. Approximately 1.5% of the population internationally has been diagnosed with dissociative identity disorder. Patients with this diagnosis often have several emergency presentations, often with self-injurious behavior and even substance use.

Of note, DID has been observed and described in several countries and associated with terms such as "outer world possession" and "possession by demons." Several case reports have been described with those terms; however, trauma and its association came with DID much later.