Chronic Fatigue Syndrome Support Group
Chronic Fatigue Syndrome (ME/CFS) describes a sense of exhaustion and post-exertion malaise, even when you have gotten enough rest and sleep. The disease is characterized by six months of incapacitating fatigue experienced as profound exhaustion and extremely poor stamina, and problems with concentration and short-term memory. The cause is unknown, but it is a...
Hope you have someone who can help you to take a systematic approach to testing so that possible conditions can be ruled out and you are not doing the same tests over and over.
Somewhere on the page below is a PDF CFS primer which you can download. It has an excellent summary of conditions which should be tested in the process of diagnosing CFS.
http://www.prohealth.com/library/showarticle.cfm?libid=16986