
What is Autism? - Autism Research Institute
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 - World Health Organization (WHO)
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. …
Autism - Wikipedia
Autism is primarily characterized by differences and difficulties in social interaction and communication, alongside restricted or repetitive patterns of interests, activities, or behaviors …
Autism spectrum disorder - Symptoms and causes - Mayo Clinic
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 …
What is autism spectrum disorder? - Harvard Health
May 22, 2025 · Autism is a neurodevelopmental condition that affects a person’s ability to communicate and interact with others, often involving challenges with starting and maintaining …
Autism: Overview - Canada.ca
Autism (also known as autism spectrum disorder or ASD) is a lifelong neurodevelopmental condition. Autistic people may: Autistic people may also have other physical, intellectual, …
Autism spectrum disorder (ASD) | Autism Speaks
Autism, or autism spectrum disorder (ASD), refers to a broad range of conditions characterized by challenges with social skills, repetitive behaviors, speech and nonverbal communication.
What is autism? - NHS
Sep 23, 2025 · Being autistic does not mean you have an illness or disease. It means your brain works in a different way from other people. It's something you're born with. Signs of autism …
About Autism Spectrum Disorder | Autism Spectrum Disorder …
Apr 14, 2025 · 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 …
Autism | Definition, Symptoms, Neurodevelopment Features,
Dec 19, 2025 · Autism is a neurodevelopmental difference that affects how a person experiences and interacts with the world. Indications of autism, often observed in physical, social, and …