
Unfortunately, this description consists of a single paragraph, which mainly asserts what it is not:
Pervasive developmental disorder spectrum manual#
The current Diagnostic and Statistical Manual of Mental Disorders ( DSM-IV) spells out the criteria for a diagnosis of PDD-NOS. As a result, some physicians and educators may not be familiar with the term or may use it incorrectly. For instance, a person may have significant autism symptoms in one core area such as social deficits, but mild or no symptoms in another core area such as restricted, repetitive behaviors.Īs a diagnosis, PDD-NOS remains relatively new, dating back only 15 years or so. Some developmental health professionals refer to PDD-NOS as “subthreshold autism." In other words, it’s the diagnosis they use for someone who has some but not all characteristics of autism or who has relatively mild symptoms. Its defining features are significant challenges in social and language development. Like all forms of autism, PDD-NOS can occur in conjunction with a wide spectrum of intellectual ability. As such, PDD-NOS became the diagnosis applied to children or adults who are on the autism spectrum but do not fully meet the criteria for another ASD such as autistic disorder (sometimes called “classic” autism) or Asperger syndrome. In the past, psychologists and psychiatrists often used the term “pervasive developmental disorders” and “autism spectrum disorders” (ASD) interchangeably.

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PDD-NOS was one of several previously separate subtypes of autism that were folded into the single diagnosis of autism spectrum disorder (ASD) with the publication of the DSM-5 diagnostic manual in 2013. PDD-NOS stands for Pervasive Developmental Disorder-Not Otherwise Specified.
