What is Prader-Willi syndrome?|
Prader-Willi syndrome is a complex genetic condition that affects many parts of the body. In infancy, this condition is characterized by weak muscle tone (hypotonia), feeding difficulties, poor growth, and delayed development. Beginning in childhood, affected individuals develop an insatiable appetite and chronic overeating (hyperphagia). As a result, most experience rapid weight gain leading to obesity. People with Prader-Willi syndrome typically have mental retardation or learning disabilities and behavioral problems. Many people with this disorder also h
How common is Prader-Willi syndrome?
Prader-Willi syndrome affects an estimated 1 in 10,000 to 25,000 people.