Autism spectrum disorder (ASD) is a developmental disability that can affect a child’s social skills, communication, and behavior. Because most children with ASD will sit, crawl, and walk on time, you may not notice delays in social and communication skills right in the first year of life.
Looking back, many parents can recall early differences in interaction and communication. See What are the Early Signs of Autism?
Find the full article at HealthyChildren.org.