Pervasive developmental disorders (PDD) — now known as autism spectrum disorder (ASD) — refers to a group of conditions that affect average development. It may appear as a delay in development of ...

Autism Spectrum Disorder (ASD) has long been associated with childhood diagnoses, but as new research shows a shift, a Maryland medical expert is sharing insight into symptoms for adults. A recent ...

Fragile X syndrome (FXS) and autism spectrum disorder (ASD) sometimes occur together. While FXS is a known genetic cause of ASD, not everyone who receives an FXS diagnosis is autistic, and not all ...

One in 36 children in the United States has autism, according to the Department of Health and Human Services (HHS) — but many don’t learn they’re on the spectrum until adulthood. Those who grow up ...