Autism, also known as autism spectrum disorder (ASD), is a disorder that causes impairment in social interaction, as well as the presence of repetitive, restricted behaviours and interests. It is usually first diagnosed in early childhood.
The term spectrum refers to the wide range of symptoms, skills, and levels of impairment that those with ASD can have. Some are mildly impaired by their symptoms, while others are severely disabled. According to the Centers for Disease Control and Prevention, ASD affects roughly 1 in 68 children.