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Epilepsy in infancy and the use of prescription medications during pregnancy are the strongest of 29 known risk factors for autism in a child.

Folic acid, a B vitamin, may lower autism risk and ease features of the condition.

A new catalog may help clinicians evaluate the daily challenges people with autism face.

Women who take acetaminophen — commonly marketed as Tylenol in the United States — early in pregnancy may increase their daughters’ risk of language delay.

Children of women who are hospitalized during pregnancy may develop poor physical, social, cognitive or emotional skills.

How the brain’s immune cells develop in ‘germ-free’ mice might help explain why autism is more prevalent in boys than girls.

Women who take folic acid or other vitamins before or during pregnancy may decrease their risk of having a child with autism.

Men and women with rheumatoid arthritis, an autoimmune condition, are at increased risk of having a child with autism.