Signs & Symptoms

Restricted interests and repetitive behaviors constitute one of two criteria that define autism in the diagnostic manual for psychiatry.

Siblings of autistic children, like those with the condition, tend to have faces that are more masculine than average.

A new analysis hints at the source of the rampant inconsistency among brain imaging studies in autism: significant differences among study sites.

The bulk of the increase in autism prevalence stems from a growing awareness of the condition and changes to the diagnostic criteria.

People with autism have more brain-related health problems, such as headaches and epilepsy, than typical people do.

An immune molecule produced during a fever improves sociability in three mouse models of autism.

A new resource that details the ages at which children attain milestones such as speaking and walking could help clinicians spot autism sooner.

People with autism are at increased odds of having other psychiatric conditions, such as anxiety and depression, but the links can be counterintuitive.