The two should be treated differently.
Many are diagnosed with “autism”, seemingly not for any lack of ability, but præferences the diagnostician does not necessarily agree with.
I also object to “neuro-” morpheme. The diagnosis of these conditions are psychiatric, not neurological, and in many cases where such a diagnosis was made, there is nothing neurologically unusual that could be found, but in some cases there is.
Autism is simply with the current understanding not a neurological, but a psychiatric disorder. — the understanding may grow such that it might become one one day, but that is not the current level of understanding, and such understanding would most likely lead to the realization that all which is currently grouped under “autism”, has many different underlying neurological causes.