Her twins' Williams syndrome diagnosis made her angry and scared at first. Now she sees the disorder's positive traits, like being happy all the time.

One of the nation’s first specialty centers for children and adults with Williams syndrome recently opened at the University of Pennsylvania, write Stephanie ...

People with Williams Syndrome treat strangers as their new best friends. Now the condition is giving clues to our evolutionary past – and what makes us human. Imagine walking down the street and ...

For Penn researcher and her son, new center focused on Williams syndrome has special meaning 02:32. A new specialty center opened Tuesday at the Hospital of the University of Pennsylvania in ...

An estimated 20,000 to 30,000 people in the United States have Williams syndrome, which is diagnosed with genetic testing. Learn more about the center on Penn Medicine's website.

People with Williams Syndrome treat strangers as their new best friends. Now the condition is giving clues to our evolutionary past – and what makes us human. Imagine walking down the street and ...