What PERVASIVE DEVELOPMENTAL DISORDERS means: Pervasive Developmental Disorders - The diagnostic category of pervasive developmental disorders (PDD) refers to a group of disorders characterized by delays in the development of socialization and communication skills. Parents may note symptoms as early as infancy, although the 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 (a developmental brain disorder characterized by impaired social interaction and communication skills, and a limited range of activities and interests) is the most characteristic and best studied PDD. Other types of PDD include Asperger's Syndrome, Childhood Disintegrative Disorder, and Rett's Syndrome. Children with PDD vary widely in abilities, intelligence, and behaviors.
- Definition Polymyositis:
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- Definition Progressive Sclerosing Poliodystrophy:
- Dictionary Sclerosing Poliodystrophy - Alpers' disease is a rare, genetically determined disease of the brain that causes progressive degeneration of grey matter in the cerebrum. The first sign of the pervasive developmental disorders explain.
- Definition Parry-Romberg:
- Dictionary Parry-Romberg syndrome is a rare disorder characterized by slowly progressive deterioration (atrophy) of the skin and soft tissues of half of the face (hemifacial atrophy), usually the left side. It pervasive developmental disorders what is.
- Definition Paraneoplastic Syndromes:
- Dictionary Syndromes - are a group of rare degenerative disorders that are triggered by a person's immune system response to a neoplasm, or cancerous tumor. Neurologic paraneoplastic syndromes are believed pervasive developmental disorders meaning.
