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  1. Autism spectrum disorder - Symptoms and causes - Mayo Clinic

    May 22, 2025 · Overview 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 …

  2. 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 condition.

  3. 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.

  4. 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 …

  5. Autism Spectrum Disorder - National Institute of Mental Health (NIMH)

    What is autism spectrum disorder? Autism spectrum disorder is a neurological and developmental disorder that affects how people interact with others, communicate, learn, and behave.

  6. What is autism spectrum disorder? - Harvard Health

    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, …

  7. Autism Spectrum Disorder (ASD) Symptoms & Causes

    Autism Autism is a difference in how your child’s brain works that causes them to socialize and behave in unique ways. Early signs of autism include limited eye contact and body language and repetitive …

  8. Autism Spectrum Disorder - MedlinePlus

    Jun 28, 2025 · Autism spectrum disorder (ASD) is a neurological and developmental disorder that begins early in childhood and lasts throughout a person's life. It affects how a person acts and interacts with …

  9. What Is Autism? - Verywell Mind

    Oct 29, 2025 · Autism, also known as autism spectrum disorder, is a neurodevelopmental disorder characterized by social interaction and communication challenges, as well as restricted or repetitive …

  10. What is autism? - NHS

    Sep 23, 2025 · Some people use other names for autism There are other names for autism used by some people, such as: autism spectrum disorder (ASD) is the medical name for autism Asperger's …