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What is a sign of autism spectrum disorder?

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Facial expressions, movements, and gestures may not match what they are saying. For instance, people with an ASD might smile while saying something sad. People with ASD might say "I" when they mean "you," or vice versa. Their voices might sound flat, robot-like, or high-pitched. read more

Autism spectrum disorder (ASD) is a developmental disorder that affects communication and behavior. Although autism can be diagnosed at any age, it is said to be a “developmental disorder” because symptoms generally appear in the first two years of life. read more

A diagnosis of ASD now includes several conditions that used to be diagnosed separately: autistic disorder, pervasive developmental disorder not otherwise specified (PDD-NOS), and Asperger syndrome. These conditions are now all called autism spectrum disorder. read more

Autism spectrum disorders (ASD) are characterized by social-interaction difficulties, communication challenges and a tendency to engage in repetitive behaviors. However, symptoms and their severity vary widely across these three core areas. read more

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