I was looking up information on 8th house placements, and I found this article
http://www.ofspirit.com/carmenturnerschott1.htm
I see autism as people who can perceive things that others can't or in a way that others don't which can cause difficulty in relating with others and thus make it hard to function fully. The article I read was talking about having planets in the 8th house correlating with being sensitive and able to sense things and read people.
I have more planets in the 8th house then any other, and when I was younger I was diagnosed with aspergers(a mild form of autism).
It would help to see a chart and be able to look for connections.