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Childhood Disintegrative Disorder Test
Disclaimer: The information provided here is for educational purposes only. Consult a qualified medical professional for advice and clarification.
Childhood Disintegrative Disorder (CDD), also known as "Heller's Syndrome" and "Disintegrative Psychosis", is a rare condition.
After 3 years of age, clients experience developmental delays in language, social function, and motor skills. Researchers have yet to find a cause for it.
The table below provides a simplified version of the DSM-IV definition, used by professionals to diagnose disorders.
To make a rough assessment of whether a person has Childhood Disintegrative Disorder or not, tick the box under "ANS" if your client matches the description. |

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DSM-IV definition for Childhood Disintegrative Disorder (299.10)
A. Apparently normal development for at least the first 2 years after birth as manifested by the presence of age-appropriate verbal & nonverbal communication, social relationships, play, & adaptive behavior.
B. Clinically significant loss of previously acquired skills (before age 10 years) in at least two of the following areas:
- Expressive or receptive language
- Social skills or adaptive behavior
- Bowel or bladder control
- Play
- Motor skills
C. Abnormalities of functioning in at least 2 of the following:
- Qualitative impairment in social interaction (e.g., impairment in nonverbal behaviors, failure to develop peer relationships, lack of social or emotional reciprocity)
- Qualitative impairments in communication (e.g., delay or lack of spoken language, inability to initiate or sustain a conversation, stereotyped & repetitive use of language, lack of varied make-believe play)
- Restricted, repetitive, & stereotyped patterns of behavior, interests, & activities, including motor stereotypes & mannerisms
D. The disturbance is not better accounted for by another specific Pervasive Developmental Disorder or by Schizophrenia.
Last modified: Fri, 28 March 2008
Note: This may be only a minor modification (e.g. changing a spelling mistake)
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