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  1. 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 …

  2. 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 …

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

    Sep 11, 2024 · What Is Autism? Autism, also called autism spectrum disorder (ASD), is a complex developmental condition that affects how people interact, communicate, learn, and behave.

  4. Understanding Autism: What It Is and What It Isn’t

    Apr 9, 2025 · What is Autism? Autism Spectrum Disorder (ASD) is a developmental difference that affects how people may perceive, experience, and interact with the world around them.

  5. 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 …

  6. 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 …

  7. 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.

  8. Autism Spectrum Disorder - National Institute of Mental Health …

    People with autism have a wide range of symptoms, which can include differences in social and communication behaviors, intellectual disabilities, and other physical and mental health …

  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 …

  10. 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 …