Many autistic children experience language regression for about three months in early childhood, but this lapse does not appear to foretell future communication issues.

Researchers are just beginning to learn what happens in the brains of autistic children during adolescence to explain their unique social, cognitive and emotional challenges.

People with autism show significant improvements in cognitive ability from age 12 to 23 years, but their autism traits remain stable over this time.

Autism is unusually common among people with congenital blindness, in part because the ability to see drives much of brain development.

Studies of Rett syndrome hint at genes, cells and brain circuits that may be involved in autism — and may pave the way to treatments for both conditions.

Autistic children who lose words reach key milestones earlier than autistic children without language regression.

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

Watch the complete replay of Stelios Georgiades discussing a model for predicting trajectories in children with autism.

Deep brain stimulation is not an approved treatment for autism but has helped some people with extreme obsessions and other severe traits. Host Ben Kuebrich investigates one success story.

An electrical brain implant all but erased the obsessions that had consumed Becky Audette, years after her autism diagnosis. Could similar implants help other people with severe autism?