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  1. Autism - Wikipedia

    Autism, also known as autism spectrum disorder (ASD), [a] is a condition characterized by differences or difficulties in social communication and interaction, a need or strong preference …

  2. 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 …

  3. Autism: Symptoms, Causes, Types, and Testing - WebMD

    Sep 11, 2024 · Autistic disorder. This is what most people think of when they hear the word "autism." It affects social interactions, communication, and play in children younger than 3 years.

  4. Signs and Symptoms of Autism Spectrum Disorder

    May 16, 2024 · Learn about the signs and symptoms of ASD.

  5. Autism (ASD): Symptoms, Causes, Tests, Treatment & More

    Dec 24, 2024 · ASD describes a group of neurodevelopmental conditions that become evident during early childhood. Certain genetic and environmental factors can contribute to its …

  6. 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 …

  7. Autism Spectrum Disorder (ASD) Symptoms & Causes

    Oct 15, 2025 · 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 you communicate and …

  8. 30 Facts to Know about Autism Spectrum Disorder

    Autism spectrum disorder is a developmental disability that often presents with challenges before the age of 3 and lasts throughout a person’s lifetime. Early identification, treatment, and …

  9. About Autism - Autism Spectrum Disorder Foundation

    ASDF educates the public about autism; provides families with tools and educational materials to assist in the early detection of autism as well as tools to assist children diagnosed with autism; …

  10. 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 …