A lifelong developmental disorder characterized by significant loss of social, play, language, and motor skills after the second year of life. Abnormalities in social interaction and communication are similar to autism.
Also on the Autistic spectrum, this disorder is a marked regression in multiple areas of functioning following a period of at least two years of apparently normal development.
A developmental disorder occurring as a result of a brain disease such an encephalitis in childhood. Symptoms include abnormalities of behaviour, progressing to psychosis.
One of the Pervasive Developmental Disorders (PDD) described in the DSM-IV. CDD is diagnosed when the child shows symptoms of autism but the onset is after the age of 3 years. CDD is usually progressive and the prognosis is usually poor.
Development in persons with this disorder proceeds normally for several years, with age-appropriate verbal and non-verbal communication, social skills, play, etc. There is a subsequent ( after 2 years of age and before 10 years) marked regression in skills in multiple areas, and the development of various autistic-like features. This disorder is also sometimes referred to as Heller's Syndrome.
A pervasive developmental disorder characterized by normal development for at least the first two years. There is a significant loss of acquired skills before age ten in the areas of language, social behavior, play, or motor. Characteristics may include impairment in social interaction and communication, and restricted repetitive behavior, interests, and activities.
Screening and diagnosis of autistic spectrum disorders, PA Filipek et al Journal of autism and developmental disorders 1999, 29(6) This refers to a rare occurrence of normal early development until at least age 24 months, followed by a rapid neurodevelopmental regression that results most often in autistic symptomatology. CDD usually occurs between 36 and 48 months of age but may occur up to 10 years of age.
Childhood disintegrative disorder (CDD), also known as Heller's syndrome and disintegrative psychosis, is a rare condition characterized by late onset (>3 years of age) of developmental delays in language, social function, and motor skills. Researchers have not been successful in finding a cause for the disorder.