Explain why controversial? I have two autistic & ADHD sons and myself have ADHD aside from the bullshit about calling Asperger's autism everything I've been told or read is factual.
Edit - just skimmed the wiki link. Looks like a lot of discourse around how it was made and the results that came from it. IMHO this is fair simply based on how large in scope it is. My curiousity is given the size of the discourse is it a large percentage of professionals or a small percentage? Far as I know it is the best, most used system for diagnosis.