Williams Syndrome | Symptoms & Causes

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.