The part of the nervous system that regulates heart rate and breathing may be involved in autism.

Many countries in Europe are reckoning with the growing demand for genetic tests for autistic people — and the accompanying ethical and scientific considerations.

About one in three autistic people in the United Kingdom is prescribed drugs designed to alter brain function.

A two-belt treadmill attached to a specialized display suggests that people with autism have a distinct walking style.

Some children who dramatically lose a range of abilities after age 2 may have a condition called childhood disintegrative disorder.

Links between sensory and motor brain networks may be unusually weak in individuals with autism.

Genetic tests for people with autism are far from routine and don’t always yield results, but the information they offer can change lives.

The brains of rats exposed in utero to the seizure drug valproate show a significant increase in brain size around the time of birth.

Traits associated with autism and gender variance may co-occur even among typical children — a finding that may ease some of the skepticism about the overlap.

Three distinct categories of traits best characterize autism, according to a study of more than 6,000 children.