A syndrome characterized by severe hypotonia (floppiness), poor suck and feeding problems in early infancy followed later in infancy by excessive eating that, if unchecked, leads gradually to huge obesity. All children with Prader-Willi syndrome (PWS) show developmental delay and mild-to-moderate mental retardation with multiple learning disabiliti [..]

Prader-Willi syndrome (PWS) is a metabolic disorder caused by genetic defects; among its features are short stature, mental retardation, poor muscle tone, and hyperphagia, which leads to childhood obe [..]

A diagnosed genetic condition, caused by the absence of chromosomal material. Characteristics include developmental impairments, poor muscle tone, short stature, small hands and feet, abnormal sexual [..]

An autosomal dominant disorder caused by deletion of the proximal long arm of the paternal chromosome 15 (15q11-q13) or by inheritance of both of the pair of chromosomes 15 from the mother (UNIPARENTA [..]

A human disease caused by deletion of part of chromosome 15, and manifested by mental retardation and other problems.