PDD-NOS (Pervasive Developmental Disorder – Not Otherwise Specified)
What it means
An older diagnostic category no longer used in DSM-5; people with previous PDD-NOS diagnoses would now generally be diagnosed under ASD.
Term details
Category: diagnosis
Regional use: general
Last source check: July 28, 2026
Source
Check this definition against cdc.gov. Open the source before making health, education, funding, or legal decisions because guidance can change.
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