Only about 0.1 percent of children in the Western Cape province of South Africa have autism, according to a review of school records.

The loss of abilities that besets some toddlers with autism is probably less sudden and more common than anyone thought.

Roughly 23 of every 10,000 children in India have autism, according to the country’s first rigorous estimate of autism prevalence.

The odds of getting an autism diagnosis depend on where in the United States a person lives.

Coaching parents to provide early social stimulation may improve outcomes for children with autism.

Community mental health clinics, which serve millions of Americans, can help identify adults with undiagnosed autism — and change their lives for the better.

Autism researchers and advocates gather in San Francisco, nearly one-third of drugs approved in the United States are later linked to safety issues, and an interactive map lays out locations of U.S. autism clinics.

Pediatricians are failing to identify 80 percent of toddlers who need an evaluation for autism, and are missing nearly twice as many girls as boys.

A new study in South Carolina has found a prevalence of 3.62 percent for autism, or roughly 1 in 28 children.

A massive new analysis drops the ratio of boys to girls who qualify for an autism diagnosis to about 3-to-1.