Autism, also called autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental disorder marked by restricted and repetitive patterns of behavior and deficits in reciprocal social communication. Other common signs include perseverative interests, stereotypic body movements (stimming), rigid routines, hyper- or hyporeactivity to sensory input, and difficulty with social interaction and verbal and nonverbal communication. Autism is clinically regarded as a spectrum disorder, meaning that it can manifest very differently in each person. For example, some are nonspeaking, while others have proficient spoken language. Because of this, there is wide variation in the support needs of people across the autism spectrum.