Hi isiselixir - I was reviewing the post you answered regarding CFS. I was diagnosed with FM about 5 or 6 years ago. Almost 2 years ago I had a "relapse" though I dont think it was a relapse of FM, though the development of CFS. I was in bed for 6 weeks. The fatigue was unbelievable, that of which I have never known. Since then I have recovered maybe 50%, but I have never been the same. I have bouts of fatigue where I'm so tired I cant even roll over in bed. I also feel weak when I get that tired. It can last anywhere from a day to a week. It is also accompanied by nausea from time to time. My doc says FM and CFS are the same, but I dont think so. Would you describe your fatigue as I did above? Oh - anyone else on this board with CFS, can you explain how your fatigue is?