Many autism researchers express satisfaction with the similarities between the ICD-11 and the DSM-5. But some have raised concerns about ways in which the two diagnostic manuals appear to diverge.

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.

High blood pressure, preterm birth and other pregnancy complications may increase the risk of autism.

A new assemblage of tools precisely gauges a baby’s biological response to sights, sounds and tactile stimuli all at once.

Many people with autism entertain thoughts of suicide and yet show few obvious signs of their distress. Some scientists are identifying risks — and solutions — unique to autistic individuals.

Children who have a rare extra copy of one segment on chromosome 15 have better cognitive abilities and daily living skills than those with a duplication that forms an extra chromosome.

Fearfulness and shyness in babies and toddlers may predict features of autism at age 7.

The brain’s system for sensing pleasure and reward shows unusual activation patterns and an atypical structure in people with autism.

Food allergies may be more than twice as common among autistic children as among their typical peers; boys with autism also tend to have skin and respiratory allergies.