@sumbog: You're right that the DSM-V did lump several different previous diagnoses into a singular "Autism Spectrum Disorder" category. From autism.com:
One of the most significant changes is that the separate diagnostic labels of Autistic Disorder, Asperger’s Disorder, and PDD-NOS will be replaced by one umbrella term “Autism Spectrum Disorder.” Further distinctions will be made according to severity levels. The severity levels are based on the amount of support needed, due to challenges with social communication and restricted interests and repetitive behaviors. For example, a person might be diagnosed with Autism Spectrum Disorder, Level 1, Level 2, or Level 3. The DSM-V revision website says the reasons for using the umbrella term of “Autism Spectrum Disorder” are 1) the old way isn’t precise enough—different clinicians diagnose the same person with different disorders, and some change their diagnosis of the same symptoms differently from year to year, and 2) autism is defined by a common set of behaviors and it should be characterized by a single name according to severity.
The removal of the formal diagnoses of Asperger’s Disorder and PDD-NOS is a major change. People who currently hold these diagnoses will likely receive a different diagnosis when re-evaluated.
Despite not having Asperger's as a separate clinical diagnosis, knowing that one exhibits the characteristics previously used to determine that specific diagnosis can be very helpful to the individual and/or family members in terms of identifying the supports that someone needs to be successful, such as qualifying for assistance with acquisition, training, and maintaining a job, for example, if someone struggles with the social skills needed to do those things successfully. The ASD diagnosis would allow someone to access state-funded services for that, but understanding what differentiates Asperger's from Autistic D/O and PDD-NOS can help direct those services much more effectively.
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