298 Dissociative Disorders
Individuals with dissociative identity disorder usually ex hibit a large number of co-
morbid disorders. In particular, most develo p PTSD. Other disorders that are highly co-
morbid with dissociative identity disorder include depressive di sorders, trauma- and
stressor-related disorders, personality diso rders (especially avoidant and borderline per-
sonality disorders), conversion disorder (functional neurological symptom disorder),
somatic symptom disorder, eating disorders,  substance-related disorders, obsessive-
compulsive disorder, and sleep disorders. Dissociative alterations in identity, memory,
and consciousness may affect the sympto m presentation of comorbid disorders.
Dissociative Amnesia
Diagnostic Criteria 300.12 (F44.0)
A. An inability to recall important autobiographical information, usually of a traumatic or
stressful nature, that is inconsistent with ordinary forgetting.
Note:  Dissociative amnesia most often consists of localized or selective amnesia for a
specific event or events; or generalized amnesia for identity and life history.
B. The symptoms cause clinically significant distress or impairment in social, occupa-
tional, or other important areas of functioning.
C. The disturbance is not attributable to the physiological effects of a substance (e.g., al-
cohol or other drug of abuse, a medication) or a neurological or other medical condition
(e.g., partial complex seizures, transient global amnesia, sequelae of a closed head in-
jury/traumatic brain injury, other neurological condition).
D. The disturbance is not better explained by dissociative identity disorder, posttraumatic
stress disorder, acute stress disorder, somatic symptom disorder, or major or mild neu-
rocognitive disorder.
Coding note: The code for dissociative amnesia without dissociative fugue is 300.12