People with autism spectrum disorder may meet similar diagnostic criteria, but the way their symptoms present in daily life can be very different. If you’re concerned about your autistic teen’s ...

Pervasive developmental disorders (PDD) — now known as autism spectrum disorder (ASD) — refers to a group of conditions that affect average development. It may appear as a delay in development of ...

Autism is a condition that tends to be rather difficult to diagnose. There is a saying that if you've met a child with autism, well, you've met one child with autism, because each one is vastly ...

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 ...

Borderline autism is not a diagnosis — it is an informal term some people may use to describe mild symptoms of autism spectrum disorder (ASD). Social communication difficulties and repetitive ...

Down syndrome and autism spectrum disorder can both involve a need for additional support. However, these are distinct diagnoses with different underlying causes and presentations. Down syndrome (DS) ...

This story has been updated to include new information about severe autism. President Donald Trump touched on the topic of autism during his wide-ranging speech on Tuesday that marked his first major ...

Running or wandering away from caregivers is common in autistic children and adults. The first step toward safety is creating a good plan for it. When many people think of the term “elope,” the first ...

Autism symptoms in adults often include social communication difficulties, restricted and repetitive behaviors, and sensory sensitivities. Symptoms can vary widely, from food aversions and sleep ...