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When do symptoms of autism appear?

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Symptoms of autism typically appear during the first three years of life. Some children show signs from birth. Others seem to develop normally at first, only to suddenly show symptoms when they are 18 to 36 months old.

SOURCE: 

American Academy of Pediatrics: Pediatrics 2010. 

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

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

Reviewed by Smitha Bhandari on October 22, 2019

SOURCE: 

American Academy of Pediatrics: Pediatrics 2010. 

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

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

Reviewed by Smitha Bhandari on October 22, 2019

From: Autism

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How common is autism?

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