Language disorders: autism and other pervasive developmental disorders.

This article summarizes current knowledge about language and communication impairments in children who have autism spectrum disorders. It reviews the language profiles that may be observed during the toddler and preschool years and in school-aged children and discusses receptive and expressive language skills that may be quite variable across the spectrum and the universal impairments in pragmatic aspects of language that are among the defining characteristics of the disorder. It concludes with clinical recommendations for pediatric screening of autism spectrum disorders and for continued monitoring of language difficulties in older children for whom interventions may be critical for enhancing effective communication in everyday life.