If you’re concerned about autism specifically in he context of children and adolescents, this document from the National Mental Health Information Center provides an overview and offers additional information about getting help.
Information on Autism and Asperger’s Syndrome

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This section provides general information on autism spectrum disorders, while our main site provides more on symptoms used as diagnostic criteria.
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Children and Adolescents with Autism
Autism Overview
If you have questions about autism spectrum disorders, this detailed booklet describes symptoms, causes, and treatments, with information on getting help and coping.
Autism Research
This overview summarizes research into the causes, diagnosis, prevention, and treatment of autism spectrum disorders.

