A diagnosis of autism spectrum disorder (ASD), or autism, involves one of three levels. Standards for the three types of ASD are listed in the Diagnostic and Statistical Manual of Mental Disorders, ...

When people hear the word autism, it’s often associated with a specific set of traits. But in reality, autism spectrum disorder (ASD) is just that—a spectrum, encompassing a broad range of differences ...

For many years, autism has been identified as a spectrum with differing levels of ability. New research suggests that the age ...

Autism spectrum disorder, or ASD, is the clinical name for the condition most people refer to as autism. Autism is defined as "a complex developmental condition that affects communication, social ...

People who learn they have autism after age 6 — the current median age at diagnosis — are often described as having a “milder” form of autism than people diagnosed as toddlers. A new study challenges ...