I have a friend with an undiagnosed disease and am thinking about doing the same thing. One thing I've thought about is using a Bayesian Network as a tool, but then again, I'd have to be really careful about how I plug in data, and it would be good to know if there are other approaches to this as well. PM me if you find a good way to go about this.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.