The Diagnostic and Statistical Manual version 5 (DSM-5) has changed how practitioners diagnose. Asperger Syndrome and PDD-NOS are no longer separate diagnoses. Going forward, everyone who meets criteria for Autism will be given one of three severity levels. If you or your child already have a diagnosis of PDD-NOS or Asperger Syndrome, there’s no need to change your diagnosis. This change affects only people diagnosed after May 2013. This page remains on our site because many people already have this diagnosis, and the terms are still in use.