racooneyes wrote:
Isn't it one of those umbrella terms like IBS or something? Pervasive developmental disorder-not otherwise specified, so if you don't fit into asperger's or any other pervasive developmental disorders then you get put into the not otherwise specified one. PDD-NOS could well be aspergers or any of the others I guess. It just means that they know you're on the spectrum just not sure where as your symptoms may cross over. I'm pretty sure I'll get the same diagnosis.
PDD-NOS is better known as "atypical autism" and is diagnosed when someone is obviously autistic but doesn't fit any clear categories, is on the diagnostic border between two categories, has an unknown childhood history, or is too young to make a clear diagnosis. PDD-NOS has nothing to do with level of impairment, since "atypical" can come along with any set of symptoms just as long as that set is not easily matched with any other sort of autism.
Over half of autism cases are PDD-NOS, so it's definitely the most common diagnosis. The very large group of PDD-NOS points to a fundamental diversity in the Spectrum, without really obvious "groups" falling along the lines of the types currently described (with the exception of the rare Rett Syndrome and its characteristic neurological symptoms and MECP2 mutation). Autistic people don't fall into easy groups. I have been lately wondering if this might simply be because autism is such a fundamental characteristic of a human being that it is easily modified by whatever other characteristics that person might have, creating as many variations of autism as there are of humans in general.