key term - Dissociative Identity Disorder

Definition

A mental disorder characterized by the presence of two or more distinct personality states, each with its own way of perceiving and interacting with the environment.

Related terms

Amnesia:

Memory loss that occurs when one identity state is not aware of what happens when another identity state is in control.

Host Personality: The original personality that is most often present and carries the individual's given name.

Switching: The process where one identity state transitions to another within an individual with Dissociative Identity Disorder.