Williams Syndrome | Symptoms and Causes

LIke ThisLIke ThisLIke ThisLIke ThisLIke This

Contact the Heart Center

What are the symptoms of Williams syndrome?

Symptoms of Williams syndrome include:

  • developmental delays, including delays in speech and motor skills
  • feeding problems or slow growth in infancy
  • learning disorders
  • very friendly personality and trusting of strangers
  • short height
  • sunken chest
  • attention-deficit hyperactivity disorder (ADHD)
  • anxiety or phobias
  • sensitivity to loud sounds

Some children with Williams syndrome have a distinct facial appearance with slightly more narrow features and a broader smile.

What are the causes of Williams syndrome?

Williams syndrome is a rare genetic disorder that often occurs randomly. However, there is a 50 percent chance that a person with Williams syndrome will pass the condition on to each of his or her children.

We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”
- Sandra L. Fenwick, President and CEO

Boston Children's Hospital
300 Longwood Avenue, Boston, MA 02115
For Patients: 617-355-6000
For Referring Providers: 844-BCH-PEDS | 844-224-7337

Close