a metabolic condition characterized by congenital reduced muscle tone, overeating, obesity and mental retardation. The syndrome is associated with below normal secretion of gonadotropic hormones by the pituitary gland.
A congenital disorder causing facial anomalies, slow height growth, low muscle tone, obesity which begins between one and three years of age, and mental retardation. For more information, follow this link to a site about Prader-Willi Syndrome.
PWS is a complex genetic disorder that includes short stature, mental retardation or learning disabilities, incomplete sexual development, characteristic behavior problems, low muscle tone, and an involuntary urge to eat constantly, which, coupled with a reduced need for calories, leads to obesity. www.thearc.org/faqs/pwsynd.html