Autism is primarily characterized by differences and difficulties in social interaction and communication, alongside restricted or repetitive patterns of interests, activities, or behaviors …

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 …

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

Oct 15, 2025 · 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 …

Sep 17, 2025 · Autism spectrum disorders (ASD) are a diverse group of conditions. They are characterized by some degree of difficulty with social interaction and communication. Other …

Learn about NIMH research on autism spectrum disorder. Find resources on the signs and symptoms of autism and potential treatments and therapies.

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

6 days ago · Autism is linked to increased brain size, altered levels and activity of neurotransmitters such as serotonin and gamma-aminobutyric acid (GABA), and fewer …

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 …

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.