Has anyone had a very bad infection such as hepatitis or any other that makes you feel very, very sick, with fever-like symptoms (but no high fever at all), nausea, aching all over and so fatigued that you can hardly move? This is how I frequently feel. It's like if my body is trying to fight some bad infection or illness, but there is no infection at all. I think that in FMS there must be some kind of autoimmunity that scientists have not found yet (or don't want to recognize). I wonder if all the FM patients feel the same. I would like to know if these symptoms are what doctors describe as flare-ups. If you feel the same, please let me know what your doctor has told you about this.