Autism - Wikipedia
Autism, also known as autism spectrum disorder (ASD), [a] is a condition characterized by differences or difficulties in social communication and interaction, a need or strong preference for predictability and routine, sensory processing differences, focused interests, or repetitive behaviors. [4] Features of autism are present from early childhood and the condition typically persists ...

Autism spectrum disorder - Symptoms and causes - Mayo Clinic
Overview 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 getting along with others socially. The condition also includes limited and repeated patterns of behavior. The term "spectrum" in autism spectrum disorder refers to the wide range of symptoms and the severity of ...

Autism: Symptoms, Causes, Types, and Testing - WebMD
Know about autism, including its symptoms, causes, types, and testing methods. Explore WebMD's comprehensive guide to better understand and manage autism.

Signs and Symptoms of Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a developmental disability caused by differences in the brain. People with ASD often have problems with social communication and interaction, and restricted or repetitive behaviors or interests. People with ASD may also have different ways of learning, moving, or paying attention. It is important to note that some people without ASD might also have some of ...

What is Autism? - Autism Research Institute
Autism is a developmental disorder that appears within the first three years of life. Learn about presentations, diagnosis, and care.

Autism Spectrum Disorder (ASD) Symptoms & Causes
Autism is a difference in how your child’s brain works that causes them to socialize and behave in unique ways. Learn early signs of autism and more.

Autism spectrum disorder (ASD) | Autism Speaks
What is autism? Learn about autism spectrum disorder (ASD), the autism definition, a brief overview of co-occurring conditions and access helpful resources.

Autism Spectrum Disorder - National Institute of Mental Health (NIMH)
Describes autism spectrum disorder (ASD): signs and symptoms; causes and risk factors; diagnosis in children, teens, and adults; and treatments.

Autism - World Health Organization (WHO)
Autistic people are more likely to die prematurely. People with autism require accessible health services for general health-care needs like the rest of the population, including promotive and preventive services and treatment of acute and chronic illness.

What is autism spectrum disorder? - Harvard Health
Autism spectrum disorder (ASD) is a complex neurological condition that affects how a person interacts, communicates, and experiences the world. Learn about its symptoms, causes, diagnosis, and support strategies across all ages.