Dissociative Identity Disorder (DID) is a mental health condition characterized by the presence of two or more distinct personality states or identities within a single individual. These identities may have their own names, ages, histories, and characteristics, and they can take control of the person's behavior at different times. DID often develops as a response to severe trauma, particularly during childhood. Individuals with DID may experience gaps in memory, known as dissociative amnesia, where they cannot recall important personal information. Treatment typically involves psychotherapy, which aims to integrate the separate identities and address the underlying trauma. Understanding and support from family and friends are also crucial for recovery.