: Symptoms that cause significant distress or interfere with daily life, including relationships and work.

Dissociative Identity Disorder (DID), formerly known as Multiple Personality Disorder, is a complex mental health condition characterized by the presence of two or more distinct personality states, or "alters," that recurrently take control of an individual's behavior. This disorder is widely understood by the medical community as a sophisticated, adaptive survival mechanism developed in response to chronic, severe childhood trauma. Core Symptoms and Diagnosis

: The existence of two or more separate identities, each with unique memories, behaviors, and ways of perceiving the world.

: Gaps in memory that go beyond ordinary forgetfulness, often involving daily activities, personal history, or traumatic events.

: In early childhood (typically before age 6), when a child's identity is still integrating, extreme stress can cause them to "compartmentalize" or "go away" mentally to survive unbearable pain.

Research indicates that between 70% and 100% of individuals diagnosed with DID have a history of severe early-life trauma.