Clinicians need to be able to distinguish autism from post-traumatic stress disorder so they can provide the right support.

Autism results from an interplay between genetics and the environment, but it has been tough to nail down the environmental factors involved.

New and improved autism screens and diagnostic tools promise to streamline the long path to an autism diagnosis.

Fragile X syndrome is a leading genetic cause of autism. People who have either condition often share certain traits, such as difficulties in social situations.

Scientists’ desire for evidence-based medical inquiry runs headlong into an apparently immovable obstacle: the U.S. Drug Enforcement Agency.

How researchers design autism prevalence studies has a significant impact on the results, says Eric Fombonne.

A novel group intervention helps young adults with autism develop independent-living skills and access social support in times of stress.

The brain’s system for sensing pleasure and reward shows unusual activation patterns and an atypical structure in people with autism.

More than half of people on the spectrum have four to five other conditions. Which conditions, and how and when they appear, varies from one autistic person to the next.

Private equity firms have injected hundreds of millions of dollars into autism therapy companies — and researchers are hopeful this will widen autistic people’s access to care.