There are three levels of autism spectrum disorder (ASD), which are described in the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5). Each autistic person is diagnosed as ...

Medically reviewed by Kira Graves, PhD Adults can have autism, and for many people, this condition is not diagnosed until adulthood. If you are wondering whether you or someone you care about has ...

One in 36 children in the United States has autism, according to the Department of Health and Human Services (HHS) — but many don’t learn they’re on the spectrum until adulthood. Those who grow up ...