Signs & Symptoms

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.

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.

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