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Prader-Willi Syndrome (PWS): Overview

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PWS is the most common of the genetic disorders that cause life-threatening obesity in children. The syndrome affects many aspects of the person's life, including eating, behavior and mood, physical growth, and intellectual development. The NICHD is one of many federal agencies and NIH Institutes working to understand PWS. The NICHD supports and conducts research on the factors that cause the syndrome and how best to diagnose and treat it.

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Common Name

  • Prader-Willi syndrome

Medical or Scientific Names

  • Prader-Willi
  • Prader-Labhart-Willi syndrome
  • PWS
  • Willi-Prader syndrome
  • Prader-Willi-Fanconi syndrome
  • PW
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