Dissociative identity disorder (DID), previously known as multiple personality disorder (MPD), is a dissociative disorder characterized by the presence of at least two personality states or "alters".

Dissociative identity disorder (DID) is a mental health condition where you have two or more interchangeable personalities. It’s usually the result of past trauma.

Aug 11, 2025 · When you have DID, you have two or more separate identities called “alters.” They control your behavior at various times. Each alter has its own personal history, traits, likes, and dislikes.

Oct 4, 2025 · Severe and repetitive childhood trauma often causes dissociative identity disorder (DID). You can have multiple identities that function independently if you have DID. Proper treatment can …

Sep 21, 2021 · Dissociative identity disorder (DID) is a rare condition in which two or more distinct identities, or personality states, are present in—and alternately take control of—an individual.

DID often co-occurs with other emotional conditions, including posttraumatic stress disorder (PTSD), borderline personality disorder (BPD), and a number of other personality disorders, as well as …

Dec 20, 2025 · Having a split personality or multiple personalities means you have more than one distinct identity. The clinical term for this condition is dissociative identity disorder (DID). Learn about …

In dissociative identity disorder, formerly called multiple personality disorder, 2 or more identities alternate being in control within the same person. These identities may have speech, temperamental, …

Jun 30, 2025 · Dissociative identity disorder (DID) is a type of dissociative disorder. It most often develops in early childhood among children who experience long-term trauma, such as emotional, …

Jul 27, 2025 · This guide illuminates DID systems through the dual lens of evidence-based research and lived experience, offering practical pathways toward integration and recovery.