Dissociative Amnesia
Inability to recall important autobiographical information, usually of a traumatic nature, not due to ordinary forgetting.
Etiology (Biopsychosocial Model)
Biological: Disruptions in hippocampal functioning
Psychological: Repression, avoidance of trauma memories
Social: Exposure to abuse, war, or identity-threatening stress
Symptoms & Diagnosis (Mnemonic: BLANK)
B - Bewildered wandering (fugue, if present)
L - Localized, selective, or generalized memory loss
A - Amnesia not explained by other disorders
N - Not due to substance or neurological condition
K - Knowledge of identity may be lost
Treatment
Psychotherapy: Psychodynamic or trauma-focused psychotherapy
Other: Hypnotherapy or memory-recovery interventions (with caution)
Support: Safe environment and reconnection with identity
Info
DSM-5-TR Code
F44.0 (without fugue), F44.1 (with fugue)
Prevalence
12-month prevalence ~1.8%; more frequent in females