I once met a man who believed he had another person, a soul, living inside of him. It brought him comfort—a psychological construct. I didn’t take it literally, but I took it seriously. I once ...

Cameron West, who lives with Dissociative Identity Disorder (DID), revealed childhood sexual abuse by his grandmother. Rikki, ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. I was too old for this. That was the thought running through my mind as ...

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 ...

A visual representation of split personality disorder. When people hear the word "split personality", they often tend to link it with the movies and the vision of a person flipping between the two ...