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  1. 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 (stimming), and, in …

  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 getting …

  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. 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 …

  6. 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 development. Autism …

  7. 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 conversations, …

  8. 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 interact with …

  9. Autism Fact Sheet - National Autism Association

    Comorbid conditions often associated with autism include Fragile X, allergies, asthma, epilepsy, bowel disease, gastrointestinal/digestive disorders, persistent viral infections, PANDAS, feeding disorders, …

  10. Autism - World Health Organization (WHO)

    Sep 17, 2025 · The abilities and needs of autistic people vary and can evolve over time. While some people with autism can live independently, others have severe disabilities and require life-long care …