👉 An autism spectrum disorder (ASD) is a group of disorders characterized by difficulties with social interaction, communication, and behavior. This condition typically affects children from age 6 to 18 years old, but it can affect people at any age. The symptoms of ASD often include delays in language development, difficulty with social skills, repetitive behavior, and problems with impulse control. Some individuals may also have a strong need for attention or a preference for certain activities.