Dissociative identity disorder (DID) is known as multiple personality disorder (MPD).
The DSM-5 updated the definition of DID in 2013, summarizing the changes as:Several changes to the criteria for dissociative identity disorder have been made in DSM-5
The DSM-IV-TR criteria for DID have been criticized for failing to capture the clinical complexity of DID, lacking usefulness in diagnosing individuals with DID (for instance, by focusing on the two least frequent and most subtle symptoms of DID) producing a high rate of false negatives and an excessive number of DDNOS diagnoses, for excluding possession (seen as a cross-cultural form of DID), and for including only two "core" symptoms of DID (amnesia and self-alteration) while failing to discuss hallucinations, trance-like states, somatoform, depersonalization, and derealization symptoms

