I think you have to be really careful following advice from strangers on the Internet, so totally feel free to ignore me! But I think it's also really hard to get a clear diagnosis for a gifted child with ASD who is not typical in their presentation, I have a gifted girl who loves people and makes eye contact and has Aspergers, ask me how hard that was to get diagnosed :-). And I also think this effect can be even more at play when one parent is a paediatrian - of COURSE he knows what asd looks like right? He sees it everyday and that's not your son... And I'm sure he's right, that your son is not like the vast majority of kids on the spectrum he sees. But maybe it's worth finding a 2e specialist and asking them? Someone who knows what highly gifted plus ASD looks like?
