Parents of girls with autism are significantly less likely than those of boys with the condition to voice concerns about their child’s social behavior.

High levels of chemicals called polychlorinated biphenyls in a pregnant woman’s blood may raise the risk of autism in her child.

Watch the complete replay of Maureen Durkin’s webinar, in which she discussed the epidemiology of autism and intellectual disability, including changes in the prevalence of each condition.

About 1 in 10 toddlers who have an older sibling with autism have cognitive and motor delays.

Childhood disintegrative disorder, a rare and severe condition, rapidly melts away a child’s abilities. A new theory proposes that this little-known condition turns back the developmental clock.

Pregnant women with elevated levels of certain immune molecules are at increased risk of having a child with both autism and intellectual disability.

High levels of an inflammatory protein in pregnant women may lower the risk of autism in their children.

Mutations in an autism-linked gene called AUTS2 do not cause the condition’s core social features, according to the most comprehensive clinical portrait to date.

Meeting people with autism can give scientists new ideas and the motivation to pursue long-term studies.

Mutations in a gene called POGZ lead to a constellation of traits, including a small head, developmental delay and, often, autism.