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Autism Spectrum Disorder (ASD)

Autism spectrum disorder (ASD) 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. ASD is known as a “spectrum” disorder because there is wide variation in the type and severity of symptoms people experience. Learn more about autism spectrum disorder.

Featured Studies

Featured studies include only those currently recruiting participants. Studies with the most recent start date appear first.

There are currently no NIMH featured studies for Autism Spectrum Disorders.