Autism or autism spectrum disorder (ASD), is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests, and activities, as well as persistent difficulties in social communication and interaction. Autism generally affects a person's ability to understand and connect with others, as well as their adaptability to everyday situations, with its severity and support needs varying widely across the underlying spectrum. For example, some are nonverbal, while others have proficient spoken language.
https://en.wikipedia.org/wiki/Autism