Signs & Symptoms

Many autistic children show continuous improvement in trait severity until they are school-age, at which point progress often levels off.

Autistic children with sensory issues show more intense physiological reactions to unpleasant sounds and other sensations than their non-autistic peers do, a new study shows.

Genes influence how autistic people react to sights, sounds and other sensory cues, whereas environmental factors shape their tendency to notice and seek out such stimuli, a new study in twins suggests.

Poor communication skills predict aggression in autistic boys, according to a new study. In autistic girls, communication and aggression may not be related.

About 1.8 percent of schoolchildren in England are autistic, and the prevalence is highest among Black children, at about 2.1 percent.

Treating mice missing the autism-linked gene CNTNAP2 with a strain of gut bacteria makes them more social but no less hyperactive.

Blood levels of PTEN protein and associated molecules could eventually help diagnose autism and other neurological conditions — and predict their outcomes.

A new machine-learning tool detects eye contact during recorded face-to-face interactions as accurately as expert observers can.

Autistic children who have difficulty managing their emotions are also likely to take medication and need assistance from emergency responders.