Prader-Willi Syndrome

Prader-Willi syndrome is an inherited condition.  A severe lack of muscle tone and failure to thrive are present in early infancy.  Later on, excessive drive to eat usually leads to significant weight problems.  Obsessive-compulsive behaviors and difficulty with social interactions are often present.  People with Prader-Willi syndrome are usually short with small hands and feet.  They typically are mildly mentally retarded.