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 low and they are considered moderately to mildly retarded. There is neither a cure for Williams syndrome nor a standard course of treatment. Treatment is symptomatic and supportive. Individuals with Williams syndrome need regular monitoring for potential medical problems by a physician familiar with the disorder. The prognosis for individuals with Williams syndrome varies.