There is a certain M.E. website that goes on, ad infinitum, about the difference between M.E. and CFS, suggesting that CFS doesnt cut it because it simply isnt the same disease. I have great difficulty getting my cognitively fatigued brain around their arguments as they seem to be so circular. How can nomenclature differences essentially invalidate the sickness experience of many people who are diagnosed with either of these two conditions, when it may simply be a matter of accepted terminology in one country compared to another? Does no one for example have neurological symptoms in countries where it is called CFS and everyone has neurological symptoms in countries where it is called M.E.? I tend to think not! Do those of you who have a CSF diagnosis have neurological symptoms? A stated inference of that group's premise seems to be that, XMRV/HGRV will not be found in M.E. patients because if it has been found in CFS patients (which according to them is NOT the same disease) it will not be found in M.E. pts. I just dont get it!!! Dr Byron Hyde a Canadian doctor holds to this view or similar about the CFS/M.E. distinction I believe, and I cant get my tired head around the dichotomy.