What Is Dissociation?

Dissociation is a disruption — partial or complete — in the normally integrated functions of consciousness, memory, identity, emotion, perception, behavior, and sense of self. It is not a disease but a psychological process, ranging from ordinary to profoundly impairing.

• DSM-5 defines dissociation as a disruption in the usually integrated functions of consciousness, memory, identity, emotion, perception, behavior, and sense of self

• Psychologist Pierre Janet (1889) first described dissociation as the 'splitting off' of mental content from ordinary awareness — a framework still influential today

• Key domains affected: memory (amnesia), identity (fragmented self-states), perception (altered reality), emotion (numbing or detachment), and sense of agency

• Dissociation is dimensional — a spectrum from highway hypnosis to Dissociative Identity Disorder, not an on/off phenomenon

• Critical distinction: dissociation is not psychosis. Reality testing is preserved; the problem is integration, not perception of unreality

Analogy: Imagine a symphony orchestra where each section plays correctly but stops listening to the others. The notes are right — the music is broken.