Prader-Willi Syndrome

Prader-Willi Syndrome (PWS) is a rare disorder related to an abnormality on the 15th chromosome. It occurs in males and females equally and in all races. The incidence of PWS is between 1 in 10,000 and 1 in 25,000 live births.

PWS typically causes low muscle tone, short stature if not treated with growth hormone, incomplete sexual development, and a chronic feeling of hunger that, coupled with a metabolism that utilizes drastically fewer calories than normal, can lead to excessive eating and life-threatening obesity.

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