Pervasive developmental disorder-not otherwise specified classifies children who demonstrate some, but not all, of the symptoms associated with other subtypes on the autism spectrum.

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Pervasive developmental disorder-not otherwise specified (PDD-NOS) is a subtype on the autism spectrum that includes children who demonstrate some, but not all, of the symptoms associated with other subtypes, such as autism or Asperger's syndrome.

Pervasive Developmental Disorder-Not Otherwise Specified Classifies Children Who Demonstrate Some