I was diagnosed with Asperger's as an adult when my grad program had me take a neuropsych evaluation. At first I was like "Finally I know why I'm different from other people". But then I got mad because I went through hell as teen and young adult and I was furious I had not been diagnosed earlier. I saw a child psych since I was 15 but as far as I know he never dxed me with Asperger's or at least my parents never told me. I guess in hindsight I would have wanted to know when I was a teenager but then I think about if someone had told me that when I was teen how sensitive I was and how it would have opened up all this other issues around self-esteem and acceptance. IDK, I feel for you and your son. I guess I'd probably lean to the not telling him right now camp but then two seconds from now I'd say tell him. I'm sorry this doesn't help...