Prader-Willi Syndrome

A rare, incurable genetic disorder that is characterized by short stature; lack of muscle tone, size and strength; poor motor skills; underdeveloped or small genitals; an insatiable appetite that can lead to obesity if untreated; mild intellectual disabilities; and learning disabilities. Babies with PWS are usually floppy with poor muscle tone, and have trouble suckling. Boys may have undescended testicles. Other signs appear later.