New research identifies four presentations of autism based on genetics, behaviors and the ages when symptoms first appeared.

Mixed autism with developmental delay: Roughly 19 percent showed early developmental delays but few signs of anxiety, ...

Autism spectrum disorder (ASD) is one broad category with three different levels to specify the degree of support a person needs. Until recently, autism was categorized into four types. Before 2013, ...

In a major step forward for autism research, diagnostics, and patient care, researchers have found four distinct autism subtypes, which can be differentiated by genetic features. These clinically ...

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, ...