The following guidance is based on the best available evidence. The full guideline gives details of the methods and the evidence used to develop the guidance. People have the right to be involved in ...

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 ...

In 1943, Leo Kanner, a child psychiatrist at Johns Hopkins University, identified autism as a separate disorder from schizophrenia in young children. Kanner called his newly identified disorder early ...