
Psychoses with origin specific to childhood
- Broad term for disorders, usually first diagnosed in children prior to age 4, characterized by severe and profound impairment in social interaction, communication, and the presence of stereotyped behaviors, interests, and activities. Compare DEVELOPMENTAL DISABILITIES.
- group of disorders characterized by delays in the development of socialization and communication skills; typical age of onset is before 3 years of age; symptoms may include problems with using and understanding language; difficulty relating to people, objects, and events; unusual play with toys and other objects; difficulty with changes in routine or familiar surroundings, and repetitive body movements or behavior patterns; AUTISM is the most characteristic and best studied PDD; other types of PDD include ASPERGER SYNDROME, Childhood Disintegrative Disorder, and RETT SYNDROME; prefer NTs where possible.

Infantile autism
- disorder beginning in childhood marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest; manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual.
- type of autism characterized by very early detection (< 30 months), social coldness, grossly impaired communication, and bizarre motor responses.

Autistic disorder, current or active state

Autistic disorder, residual state

Disintegrative psychosis

Childhood disintegrative disorder, current or active state

Childhood disintegrative disorder, residual state

Other specified early childhood psychoses
- neuropsychiatric disorder whose major manifestation is an inability to interact socially; other features include poor verbal and motor skills, singlemindedness, and social withdrawal.
- Syndrome or disorder usually first diagnosed in childhood, characterized by severe and sustained impairment in social interactions and restricted, repetitive patterns of behaviors, interests, and activities.

Other specified pervasive developmental disorders, current or active state

Other specified pervasive developmental disorders, residual state

Unspecified childhood psychosis
- Broad term for disorders, usually first diagnosed in children prior to age 4, characterized by severe and profound impairment in social interaction, communication, and the presence of stereotyped behaviors, interests, and activities. Compare DEVELOPMENTAL DISABILITIES.
- group of disorders characterized by delays in the development of socialization and communication skills; typical age of onset is before 3 years of age; symptoms may include problems with using and understanding language; difficulty relating to people, objects, and events; unusual play with toys and other objects; difficulty with changes in routine or familiar surroundings, and repetitive body movements or behavior patterns; AUTISM is the most characteristic and best studied PDD; other types of PDD include ASPERGER SYNDROME, Childhood Disintegrative Disorder, and RETT SYNDROME; prefer NTs where possible.

Unspecified pervasive developmental disorder, current or active state

Unspecified pervasive developmental disorder, residual state