I have Crohn's disease, which is an autoimmune disease. The professor for reumathology in Israel which diagnosed me with fibromyalgia, is also a head of a research team in that area, and he said to me that his rsearch team found out that there are more percents crohn's diseasee patients within the group of fibromylagia patents than in the percents in the normal population (or perhaps it was that there are more percents of fibromylagia patients within the group of Crohn's disease pateints than the percents of fibromyalgia patients in the notmal population - but I think it was the first one).
It's also interesting to see the thread about rituximab, which is a drug for auto-immune diseases if I'm not mistaken, and which showed good results in 3 ME/CFS pateints.
Since the study about XMRV in ME/CFS, fibromyalgia etc was published, I kind of hope that it will turn out to be the cause for Crohn's disease, or at least for my intenstinal problem (which are, according to my doctor, not typical), which I know is selfish but let's addmit, everyone wants that first of all, he and his loved ones would be healthy.