Autism, or autism spectrum disorder ASD , is a developmental disorder. It affects how people communicate and interact with others , as well as how they behave and learn. Autism is a lifelong condition and symptoms and signs can first appear when a child is very young. Autism cannot be cured, but therapies and support services can help a person with ASD improve their symptoms and quality of life. Good to know: While the causes of autism are unclear, a large body of scientific research shows that there is absolutely no link between autism and vaccines.

Autism spectrum disorder ASD is a developmental disorder that affects communication and behavior. ASD occurs in all ethnic, racial, and economic groups. The American Academy of Pediatrics recommends that all children be screened for autism. All caregivers should talk to their doctor about ASD screening or evaluation. People with ASD have difficulty with social communication and interaction, restricted interests, and repetitive behaviors.

Learn more about the symptoms of autism in adults here. Autism is generally characterized by social and communication difficulties and by repetitive behaviors. Symptoms of autism occur in three main areas:. Adults with autism who are high functioning may have only mild challenges, which are sometimes mistaken for symptoms of attention deficit hyperactivity disorder ADHD ; others may have more severe symptoms, like impaired spoken language.