I'm really hoping someone can help me?
A difference between VIQ and PIQ of as much as 17 standard score points(in favour of former) is relatively uncommon and would be found in only about 10% of the population.
I don't even really understand the terminology, but if your scores are 96 and 73, ie better than median for both, any kind of learning disability or Nonverbal Learning Disorder would seem to be a poor description. Is the idea that you're intellectually very able, but poor at applying that ability in practice? That I could relate to. But such tests are not directly taken into account in an autism diagnosis as far as I know, since that's more to do with social communication. Nor really any other 'disorder' which will have their own tests of signs and 'symptoms' (not really appropriate language for autism, but it's evolved out of medical terminology).
(In my case my latest non-verbal results, involving pattern matching etc, were in the top percentile, but verbal reasoning results slightly lower - then again I may be atypically atypical.) 'HFA' and 'Aspergers' are both rapidly becoming obsolete terms - 'autism without learning disability [or language delay]' is coming in.
A bit more searching shows an opinion of a very roughly similar case: http://www.brainy-child.com/experts/disparity-VCI-in-WISC-IV.shtml
Contradicting what I just said "A higher VIQ may also indicate some level of a mood disorder such as depression, or right-hemisphere brain damage." http://provereal.blogspot.co.uk/2008/10/on-fsiq-viq-piq-general-discussion.html whereas lower VIQ (which I had) could be less education or autism. Don't know. It's a blog.
What I have been reading recently maybe agrees with this last https://www.frontiersin.org/articles/10.3389/fnins.2016.00300/full "Autism thus involves absolutely or relatively enhanced abilities in the Perceptual domain, but reduced or preserved Verbal and Rotation skills, and absolutely or relatively enhanced fluid intelligence, but reduced or preserved crystallized intelligence." Don't know. It's a hypothesis.
Given my supposedly very high IQ, I can't explain why I'm pretty poor at chess or cryptic crosswords. Possibly just can't get interested in them.
Thanks Cassandro. The short answer is I don't know! I'm awaiting advice from professionals which I will feed back here just in case anyone else gets the same and is curious!
Thanks ever so much for your reply.