Prader-Willi Syndrome

**Semantic type:** Disease or Syndrome

**Definition:** A genetic syndrome caused by deletions or disruptions of chromosome 15. It is characterized by reduced fetal activity, mental retardation, hypotonia, short stature, and hypogonadism.

**Synonyms:** - Prader-Labhart-Willi Syndrome - Prader-Willi-Labhart Syndrome