PANDAS syndrome is the result of an autoimmune response to a strep infection. Learn about causes, symptoms, treatment, and more at WebMD.

Colin Farrell opened up to PEOPLE about his son James, who was diagnosed with Angelman syndrome. Here’s what to know about the rare neurogenetic disorder that affects 1 in 15,000 people.

Asperger’s syndrome (AS) is a part of autism spectrum disorder (ASD) that affects communication and socialization skills. An autistic child may show early signs of the disorder, but most get ...