Diagnosis

A new survey shows that children with autism or other developmental disabilities in the United States are at least twice as likely to have asthma as their neurotypical peers are.

A common autism screening tool misses more than 70 percent of autistic toddlers but flags more than 80 percent of non-autistic toddlers who have intellectual disability.

Most toddlers who screen positive for autism do not receive the recommended referrals for follow-up tests or therapies.

Brothers and sisters of people with autism are both about two to three times more likely than the general population to have an autistic child themselves.

Three widely used tests for assessing autism can accurately measure trait severity in girls and boys.

A new study highlights the challenge of distinguishing genetic variants linked to autism from those associated with cognitive development.

Autistic preschoolers may get too little therapy and too much medication, according to a new study.