ICD-10 Diagnostic Criteria, Childhood Disintegrative Disorder
ICD-10 Diagnostic Criteria for Research - F84.3 - Other Childhood Disintegrative Disorder 1
A. An apparently normal development up to the age of at least two years. The presence of normal age-appropriate skills in communication, social relationships, play, and adaptive behaviour at age two years or later is required for this diagnosis.
B. A definite loss of previously acquired skills at about the time of onset of the disorder. The diagnosis requires a clinically significant loss of skills (and not just a failure to use them in certain situations) in at least two of the following areas:
- expressive or receptive language;
- social skills or adaptive behaviour;
- bowel or bladder control;
- motor skills.
C. Qualitatively abnormal social functioning, manifest in at least two of the following areas:
- qualitative abnormalities in reciprocal social interaction (of the type defined for autism);
- qualitative abnormalities in communication (of the type defined for autism);
- restricted, repetitive, and stereotyped patterns of behaviour, interests, and activities, including motor stereotypies and mannerisms;
- a general loss of interest in objects and in the environment.
D. The disorder is not attributable to the other varieties of pervasive developmental disorder; acquired aphasia with epilepsy (F80.6); elective mutism (F94.0); schizophrenia (F20-F29); Rett's Syndrome (F84.2).
1. World Health Organization. (1992). International classification of diseases: Diagnostic criteria for research (10th edition). Geneva, Switzerland: Author.
The complete ICD-10 description of Other Childhood Disintegrative Disorder is available on page 151 of The ICD-10 Classification of Mental and Behavioural Disorders: Diagnostic criteria for research.