Pediatricians are failing to identify 80 percent of toddlers who need an evaluation for autism, and are missing nearly twice as many girls as boys.

A boost in the activity of microglia, the brain’s immune cells, during gestation may predispose boys to autism.

People with autism fall in love. They marry. They even (gasp) have sex. Yet these deeply human needs have mostly gone ignored by scientists.

A massive new analysis drops the ratio of boys to girls who qualify for an autism diagnosis to about 3-to-1.

A minority of boys with autism have brains that are unusually large relative to their bodies — a trait tied to regression and intellectual disability.

Children who carry certain rare mutations linked to autism learn to walk late — but have less severe social and language difficulties than do other children with the condition.

Removing the Rett syndrome gene, MeCP2, from distinct cells and brain regions reveals hidden features of the condition.

The brains of some women with autism more closely resemble those of typical men than those of typical women.

Girls who show severe emotional or behavioral problems are more likely to be diagnosed with autism than those who do not.

Although the number of people diagnosed with autism is on the rise, the proportion with severe features has dropped since 2000.