Autism spectrum disorder (ASD) is a developmental disorder that involves impairments in social interaction and communication, challenges with sensory processing, and repetitive behaviors. The term “spectrum” reflects the fact that symptoms vary across different individuals, ranging in type and severity.

People with autism may appear indifferent and remote and can have difficulty forming emotional bonds with others. They may have unusual responses to sensory experiences—the noise of a leaky faucet, for example, might become extremely disruptive.

The earlier the disorder is diagnosed, the sooner a child can be helped through treatment interventions.