With me, I have two cousins who have forms of autism, and physically, I fit many, many bills that you see with mentally handicapped folk; severe facial deformities effecting every facial feature, irregular vocal tone, undecipherable handwriting, extreme social flaws, stunted physical growth. And concerning mental abilities, I've always had an extremely high IQ because of my extremely precise memory capabilities, but when it comes to interests, I've always had extreme obsessions with things like the imaginary worlds I create in my head when writing books or scripts (I draw the characters, compose the scores, write the entire things, ect ect) and I do have quite a few obsessions about random things like certain video games or books that I know every single detail about fanatically.
However, I really don't think I have any form of autism really. I think any social awkardness I have is attributed to how, when growing up, my family was both abusive and very strange, and that I had very few friends even in my youngest of years; I just had no way to develop socially and my parents were socially stuck in the 1940's. Even growing up in school, my autistic appearance (I truly looked like I had mild down syndrome, I have very typical facial features of autistic children) caused constant bullying and complete sexual/social alientation, so I never developed social skills even growing up as a teenager and into an adult. Plus, on top of being self-concious about appearing autistic, the same features plagued me because they were also very masculine and not at all female.
One thing I've always been curious about is way back in 3rd grade, I suffered a significant trauma to my skull when one boy plowed into my head on the playground when he was running at super-speed without looking; it knocked me out unconcious for a few seconds and left me with a black eye that lasted forever. Before that incident, I looked very normal, my handwriting was very good, and I had virtually no negative tendencies. Post-accident, all of my pictures showcase features that started to grow rapidly in a direction that looked very "twisted" and handicapped (everyone here has seen autistic children), my handwriting became downright horrid unless I concentrated on it to the point it hurts, and I started developing a lot of OCD periods concerning very weird stuff. Not to mention, my biggest concern at the moment is still figuring out wether or not I have Acromegaly, which can be caused by trauma to the brain.