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Williams Syndrome Reviewed 07-01-2001 Get Web page suited for printing Email this to a friend or colleague Studies with patients Table of Contents (click to jump to sections) What is Williams Syndrome?Is there any treatment? What is the prognosis? What research is being done? Organizations What is Williams Syndrome? Williams syndrome is a rare, congenital (present at birth) disorder characterized by physical and developmental problems including an impulsive and outgoing (excessively social) personality, limited spatial skills and motor control, and intellectual disability (i.e., developmental delay, learning disabilities, mental retardation, or attention deficit disorder). Other features include characteristic "elfin-like" facial features, heart and blood vessel problems, hypercalcemia (elevated blood calcium levels), low birth weight, slow weight gain, feeding problems, irritability during infancy, dental and kidney abnormalities, hyperacusis (sensitive hearing), and musculoskeletal problems. Symptoms vary among patients. Although individuals with Williams syndrome may show competence in areas such as language, music, and interpersonal relations, their IQs are usually below average, and they are considered moderately to mildly retarded. Scientists have learned that most individuals with Williams syndrome have a deletion of genetic material on chromosome 7. This probably causes the physical and developmental problems experienced by patients. Is there any treatment? What is the prognosis? What research is being done? National Organization for Rare Disorders (NORD)
National Heart, Lung, and Blood Institute (NHBLI)
National Institute of Child Health and Human
Development (NICHD)
Williams Syndrome Association
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