Autism - Wikipedia
Autism, also known as autism spectrum disorder (ASD), [a] is a condition characterized by impairment in social communication and interaction, [1][4] as well as a need or strong preference for predictability and routine, sensory processing differences, focused interests, or repetitive behaviors.

What is Autism? - Autism Research Institute
Autism is a developmental disorder that appears within the first three years of life. Learn about presentations, diagnosis, and care.

What is autism? - National Autistic Society
What is autism? Autism influences how people experience and interact with the world. It is a lifelong neurodivergence and disability. Autistic people are different from each other, but for a diagnosis they must share differences from non-autistic people in how they think, feel and communicate.

Autism spectrum disorder - Symptoms and causes - Mayo Clinic
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 along with others socially. The condition also includes limited and repeated patterns of behavior. The term "spectrum" in autism spectrum disorder refers to the wide range of symptoms and the severity of these ...

Autism: Symptoms, Causes, Types, and Testing - WebMD
Know about autism, including its symptoms, causes, types, and testing methods. Explore WebMD's comprehensive guide to better understand and manage autism.

About Autism Spectrum Disorder | Autism Spectrum Disorder (ASD) | CDC
Autism spectrum disorder (ASD) is a developmental disability caused by differences in the brain. Some people with ASD have a known difference, such as a genetic condition. Other causes are not yet known. Scientists believe there are multiple causes of ASD that act together to change the most common ways people develop. We still have much to learn about these causes and how they impact people ...

Signs and Symptoms of Autism Spectrum Disorder
Signs and Symptoms of Autism Spectrum Disorder Key points 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 restricted or repetitive behaviors or interests.

Outline of autism - Wikipedia
The following outline is provided as an overview of and topical guide to autism: Autism or autism spectrum disorder (ASD) – a condition characterized by differences or difficulties in social communication and interaction, a need or strong preference for predictability and routine, sensory processing differences, focused interests, or repetitive behaviors.

Autism Spectrum Disorder - National Institute of Mental Health (NIMH)
Describes autism spectrum disorder (ASD): signs and symptoms; causes and risk factors; diagnosis in children, teens, and adults; and treatments.

Autism spectrum disorder (ASD) | Autism Speaks
What is autism? Learn about autism spectrum disorder (ASD), the autism definition, a brief overview of co-occurring conditions and access helpful resources.