May 22, 2025 · Autism spectrum disorder is a condition related to brain development that affects how people see others and socialize with them. This causes problems in communication and getting …

Learn about NIMH research on autism spectrum disorder. Find resources on the signs and symptoms of autism and potential treatments and therapies.

May 16, 2024 · Autism spectrum disorder (ASD) is a developmental disability caused by differences in the brain. People with ASD often have problems with social communication and interaction, and …

Oct 15, 2025 · What is autism spectrum disorder? Autism spectrum disorder (ASD) is the full medical name for autism. The DSM-5-TR defines ASD as a difference in brain functioning that affects how …

Current diagnostic guidelines in the DSM-5-TR break down the ASD diagnosis into three levels based on the amount of support a person might need: level 1, level 2, and level 3. See more information …

May 22, 2025 · Autism spectrum disorder (ASD) is a complex neurological condition that affects how a person interacts, communicates, and experiences the world. Learn about its symptoms, causes, …

Sep 17, 2025 · Autism – also referred to as autism spectrum disorder ̶ constitutes a diverse group of conditions related to development of the brain. In 2021 about 1 in 127 persons had autism. …

Apr 17, 2025 · 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, …

Jan 16, 2025 · WebMD explains autism spectrum disorders, including Asperger's syndrome, Rett syndrome, PDD-NOS, and childhood disintegrative disorder.

Autism is a developmental disorder with symptoms that appear within the first three years of life. Its formal diagnostic name is autism spectrum disorder. The word “spectrum” indicates that autism …