The United States has approved a compound derived from marijuana as a treatment for certain types of epilepsy. The ruling may spell good news for autism research.

Many people with autism entertain thoughts of suicide and yet show few obvious signs of their distress. Some scientists are identifying risks — and solutions — unique to autistic individuals.

Fearfulness and shyness in babies and toddlers may predict features of autism at age 7.

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.

A huge new research collaboration may jump-start the race to develop therapies for autism.

An app may help people with autism manage anxiety, adults on the spectrum share the items they use to self-soothe, and autistic children can pick up new words by overhearing them.

The instruments clinicians use to diagnose depression in people with autism cannot capture its unique presentation in this group.

Young people with autism have more psychiatric and medical conditions than do their typical peers or those with attention deficit hyperactivity disorder.

Increasing numbers of young adults with autism are pursuing a college education. Many campuses are not ready for them.

Children with autism often have problems understanding others’ thoughts; those who use mental strategies to compensate for these problems may be unusually anxious.