About 10 percent of people with a large mutation in chromosome 22 have autism, attention deficit hyperactivity disorder or intellectual disability.

An ingestible electronic capsule enables researchers to instantaneously detect molecules associated with gastrointestinal issues.

Machine-learning holds the promise to help clinicians spot autism sooner, but technical and ethical obstacles remain.

Teenagers in the general population who have trouble with social communication are at double the risk of purposefully harming themselves with suicidal intentions than their peers.

Rats with a mutation in CACNA1C, a gene linked to autism, make fewer happy squeaks while playing than controls do, and ignore other rats’ requests to play.

Mice with a mutation in a top autism gene may have altered levels of certain gut bacteria; feeding the mice one of these bacterial species eases some of their troubles.

The pupils of babies later diagnosed with autism shrink more in response to light than those of their typical peers.

Two new parent questionnaires could help clinicians identify autism in babies and in members of racial or ethnic minority groups.

An expanding arcade of video games takes aim at easing autism traits, from poor visual attention to problems with motor skills. But how useful — and fun — are these games, really?

People with mutations in SHANK3 have milder features than do those missing a chunk of DNA that includes the gene.