Mice with a mutation in their mitochondrial DNA show altered brain activity, repetitive behaviors and reduced sociability, according to a new study.

A new tool enables researchers to create mosaic mutations in only some cells and then accurately identify which cells are affected.

Autistic people are at an increased risk for intentional self-harm and death by suicide, but co-occurring psychiatric conditions may drive those behaviors.

Autistic people and their families are increasingly experimenting with marijuana to try to ease problems such as insomnia, epilepsy and chronic pain — and traits of autism. But there is little evidence for its safety or effectiveness.

A new survey shows that children with autism or other developmental disabilities in the United States are at least twice as likely to have asthma as their neurotypical peers are.

About 0.7 percent of children in China aged 6 to 12 — and 1.15 percent of 10- and 11-year-olds in Greece — have autism, figures that are consistent with prevalence estimates elsewhere.

A new method for electroencephalography source localization can noninvasively identify brain networks involved in generating seizures in people with epilepsy.

Early behavioral signs predict seizures in autistic children, according to a new study.

The mutation that causes Angelman syndrome makes neurons hyperexcitable, which may explain the frequent seizures that most people with the syndrome have.