People with autism tend to partner with others on the spectrum, which may raise the condition’s prevalence within families and across the population.

A DNA deletion linked to autism causes male mice, but not females, to have trouble falling asleep.

A drug called atomoxetine eases hyperactivity in children who have both autism and attention deficit hyperactivity disorder.

Genes linked to autism are associated with a variety of other ailments, including cancer, heart conditions, autoimmune disorders and gut problems.

Children who officially lose their autism diagnosis show no residual signs of the condition.

About 1 in 10 toddlers who have an older sibling with autism have cognitive and motor delays.

People with autism assemble a wish list for researchers, a digital wristband tracks anxiety, and a runner on the spectrum prepares for his Paralympic debut.

Children with autism, attention deficit hyperactivity disorder or obsessive-compulsive disorder all show similar disruptions in brain structure.

Men with autism who have above-average intelligence may not achieve typical financial and personal milestones — but many are content.