Autism Spectrum Disorder
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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. Although autism can be diagnosed at any age, it is described as a “developmental disorder” because symptoms generally appear in the first two years of life.
Where can I learn more about autism?
Free health information
Brochures and fact sheets with more information about autism, including signs, symptoms, and treatment options. Available for free in print and online.
Science updates
NIMH news about autism, including press releases and highlights on the latest research findings.
Statistics
Information about the prevalence and treatment of autism in the United States.
Why is NIMH studying autism?
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 conditions. People with autism also have a wide range of health care and service needs. Research shows that access to needed services and supports early in life can promote people’s health and well-being over the long term.
How is NIMH research addressing this critical topic?
We’re supporting research to better understand the full range of symptoms that people with autism may experience. This includes research to identify biological and behavioral characteristics that can help us understand a person’s symptoms, how their symptoms and needs may change over time, and which treatments, services, and supports they may benefit from.
We’re also supporting research to find better ways to meet the individual needs of people with autism. This includes research to improve early autism screening so that children with autism can be connected with appropriate services and supports as early as possible. This also includes research on supporting people with autism as they age, from childhood to adolescence and throughout adulthood. NIMH is also investing in research to better meet the needs of autistic people who have co-occurring mental health conditions.
NIMH supports the Autism Centers of Excellence Program , an NIH-wide initiative funding large-scale, multidisciplinary studies on autism spectrum disorder.
Explore clinical trials about autism
Clinical trials are research studies that look at new ways to prevent, detect, or treat diseases and conditions. To learn more or find a study, visit:
- Clinical Trials – Information for Participants: Answers to common questions about clinical trials, including why people might take part in a clinical trial and what they can expect
- Clinicaltrials.gov: Current Studies on Autism : List of clinical trials funded by the National Institutes of Health (NIH) being conducted across the country
- NIMH Autism Studies for Children: List of studies being conducted on the NIH campus in Bethesda, MD
Share outreach materials about autism
Digital shareables
Social media graphics, videos, and resources about autism.
Find help and support
Learn how to find help for yourself or someone else. You can also find support and locate mental health services in your area on the Substance Abuse and Mental Health Services Administration website.
If you or someone you know is struggling or having thoughts of suicide, call or text the 988 Suicide and Crisis Lifeline at 988 or chat at 988lifeline.org . In life-threatening situations, call 911.
Additional federal resources
- Autism Spectrum Disorder (Centers for Disease Control and Prevention): Information about signs and symptoms, screening, and treatment and additional resources for professionals and for the public
- Autism Spectrum Disorder (Eunice Kennedy Shriver National Institute of Child Health and Human Development): General information about symptoms, diagnosis, and treatment
- Autism Spectrum Disorder (MedlinePlus): Information, journal articles, and other resources about autism collected by the National Library of Medicine
- Autism Spectrum Disorder: Communication Problems in Children (National Institute on Deafness and Other Communication Disorders): Information about how autism may affect communication and interventions that can support communication skills
- Interagency Autism Coordinating Committee (IACC) : Website for the IACC, a federal advisory committee that coordinates federal efforts and provides advice to the Secretary of Health and Human Services on issues related to autism
Last Reviewed: December 2024