The network of researchers keeping tabs on autism prevalence in U.S. children plans to follow up with some of those children in adolescence.

How researchers design autism prevalence studies has a significant impact on the results, says Eric Fombonne.

About 1 in 100 children in India under age 10 may have autism, and nearly 1 in 8 at least one neurodevelopmental condition.

About 10 percent of people with a large mutation in chromosome 22 have autism, attention deficit hyperactivity disorder or intellectual disability.

More boys than girls have autism; diagnostic biases and genetic factors may explain the skewed sex ratio.

The bulk of the increase in autism prevalence in the United States between 2000 and 2012 can be attributed to children on the mild end of the spectrum.

Five years after its latest revision, the manual used to diagnose autism is back under scrutiny, as evidence suggests it excludes some people on the spectrum.

About 1 in 59 children in the United States has autism, according to data released today by the U.S. Centers for Disease Control and Prevention.

Children with autism typically have four or five other conditions, such as attention deficit hyperactivity disorder, that can affect when they are diagnosed.

Girls with autism may have less severe restricted and repetitive behaviors than do boys on the spectrum.