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What other disorders are classified under autism spectrum disorder (ASD)?

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Autism is just one syndrome that now falls under the heading of autism spectrum disorders. Previous disorders that are now classified under the umbrella diagnosis of autism spectrum disorder (ASD) or a social communication disorder include:

  • Autistic disorder. This is what most people think of when they hear the word "autism." It refers to problems with social interactions, communication, and imaginative play in children younger than 3 years.
  • Asperger's syndrome. These children don't have a problem with language -- in fact, they tend to score in the average or above-average range on intelligence tests, but they have the same social problems and limited scope of interests as children with autistic disorder.
  • Pervasive developmental disorder (PDD) is also known as atypical autism. This is a kind of catch-all category for children who have some autistic behaviors but who don't fit into other categories.
  • Childhood disintegrative disorder. These children develop normally for at least two years and then lose some or most of their communication and social skills. This is an extremely rare disorder and its existence as a separate condition is a matter of debate among many mental health professionals.

From: Understanding Autism -- the Basics WebMD Medical Reference

SOURCE: 

American Academy of Pediatrics: Pediatrics 2010. 

Parker, S., Zuckerman, B., and Augustyn, M. (editors). Lippincott, 2005. Developmental and Behavioral Pediatrics: A Handbook for Primary Care,

American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders version 5 ( DSM-5

Reviewed by Smitha Bhandari on February 14, 2019

SOURCE: 

American Academy of Pediatrics: Pediatrics 2010. 

Parker, S., Zuckerman, B., and Augustyn, M. (editors). Lippincott, 2005. Developmental and Behavioral Pediatrics: A Handbook for Primary Care,

American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders version 5 ( DSM-5

Reviewed by Smitha Bhandari on February 14, 2019

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How is Rett syndrome associated with autism?

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