Sally Ozonoff is looking for early signs of attention deficit hyperactivity disorder in videos of hundreds of younger siblings of children with autism.

Autism and attention deficit hyperactivity disorder often coincide, but the search for common biological roots has turned up conflicting evidence.

Common genetics may help forge social ties, a nonspeaking woman with autism hosts “The Late Show,” and the mix of bacteria in the gut may relate to brain structure.

Autism prevalence plateaued for the years 2014 to 2016, a review finds no evidence that herbal therapies for autism work, and a panel of four proteins in blood may distinguish children with autism.

A monkey study suggests facial recognition is not innate, a puzzle piece symbol carries negative connotations, and scientists are using a federal law to snoop on colleagues.

Transcranial treatment may bolster memory in adults with autism, inflammatory molecule may alter an emotional brain region in newborns, and examining ants could yield insights into autism

People with autism are at high risk of death from injury, China starts a clinical trial involving human embryonic stem cells, and individuals with autism have trouble seeing faces in food.

A trio of studies make the strongest case to date for shared genetic roots between autism and attention deficit hyperactivity disorder.

Children born to parents who are unusually young or old stand an increased chance of having features of autism or other psychiatric conditions.

Many people on the spectrum take multiple medications — which can lead to serious side effects and may not even be effective.