Comorbidity is when a person has more than one health condition at once. Researchers investigating the comorbidity of personality disorders have found people with certain disorders may have other ...

Herschel Walker details his life with multiple personalities in new book. Jan. 21, 2008 — -- NFL superstar Herschel Walker has long suffered from multiple personality disorder, the Heisman Trophy ...

Today’s fast-paced and high-pressure world is believed to be one of the major factors responsible for the increasing cases of ...

We learn the story of “Ella,” a patient with 12 different personalities, or “parts,” and of her therapist, who helped her form a peaceful community—many selves in one body and mind. She'll tell us ...

The exact cause of personality disorders is unclear. However, genetics, neurological differences, and environmental factors may contribute to the development of these complex mental health conditions.