"High-functioning autism" (HFA) is a term used to describe people with a certain level of autism spectrum disorder (ASD). They have milder symptoms and fewer challenges than those with more severe ...

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, ...

The idea of autism as a single spectrum has shaped thinking for decades. But many autistic people and researchers now argue ...

Autism diagnoses ranges across levels, and each individual on the spectrum is unique Understanding Autism Spectrum Disorder (ASD) and defining its varying levels have evolved over time. Now, doctors ...

Clinicians and researchers continue to push back on unsupported claims about the causes of autism while new NIH projects aim to clarify its complex origins.