In Dissociative Identity Disorder (DID), which of the following is a key diagnostic criterion in DSM-5?

• A Presence of at least 3 distinct personality states
• B Dissociative episodes must be associated with trance-like states only in specific cultural contexts
• C At least one personality state must be a child alter
• D Disruption in identity characterized by ≥2 distinct personality states WITH recurrent amnesia for everyday events, not due to substance or medical condition ✓

Explanation

DSM-5 DID Criterion A specifies disruption of identity characterized by two or more distinct personality states, involving marked discontinuity in sense of self and agency, accompanied by alterations in affect, behavior, consciousness, memory, perception, cognition, and sensorimotor functioning. Criterion B is recurrent amnesia for everyday events, personal information, and traumatic events (not ordinary forgetting). There is no requirement for ≥3 states or for a child alter. DSM-5 also added 'possession trance' experiences as culturally recognized manifestations of identity disruption within DID.

Reference: Kaplan & Sadock's Synopsis of Psychiatry, 11th ed.

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