Dissociative identity disorder (DID), formerly known as multiple personality disorder and split personality disorder, is a mental health condition where you have two or more separate identities.

A sharp decline in cases followed, and the disorder was reclassified as "dissociative identity disorder" (DID) in DSM-IV. [7] In the 2020s, an uptick in DID cases followed the spread of viral videos about …

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.

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.

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 …

Jun 30, 2025 · Because DID has been misunderstood and is hard to detect, it is often called a rare condition. In fact, DID occurs in approximately 1% of the general population.

May 26, 2021 · Many people recognize the condition by its former name: multiple personality disorder. Yet DID is actually a dissociative disorder, not a personality disorder.

Jul 3, 2025 · DID is fundamentally a trauma-related disorder that typically develops during early childhood as a response to severe, chronic abuse or trauma. The condition involves disruptions in …

2 days ago · The DSM-5 criteria for dissociative identity disorder (DID) center around multiple personalities, amnesia as well as three other DID criteria. Learn more.