I have found a site that deals with this syndrome which is characterized by constant low body temperature. It is treated with T-3 compounded thyroid medication which will supposedly reduce or alleviate the fibromyalgia symptoms. Has anyone been treated for this yet? If so, please tell about your experience. I've checked my body temp for the past week and it has been consistently low, so this is something I'm considering, however, my doctor is not familiar with it.