Two drugs that alter the activity of the hormone vasopressin seem to improve social communication in autistic people, but some experts question the findings.

Parents of children with rare autism-linked mutations are banding together for support and to join forces with scientists, accelerating the pace of research.

Parents of autistic children are paying tens of thousands of dollars for stem cell therapies that often use medical waste. Despite the risks, regulators have been slow to act.

A much-touted behavioral therapy for autism, the Early Start Denver Model, may not be as effective as its creators had hoped.

Autism doesn’t just affect boys and men, but research on the condition still predominantly focuses on them. Some scientists are finally beginning to include women and nonbinary people in their studies.

A popular system used to detect speech may not identify most vocalizations produced by autistic children aged 5 and older.

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.

The U.S. Drug Enforcement Agency has made it legal for doctors to prescribe an epilepsy drug derived from marijuana. But all other compounds derived from marijuana remain under tight restrictions.

The active ingredient in the drug popularly known as ecstasy eases social anxiety in people with autism.

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