For several years I have battled unexplained severe fatigue, cognitive/memory issues, periods extreme weakness of muscles (without exertion) - especially upper arms and upper legs, unexplained
frequent urination, etc. In addition, my hair has been thinning for almost a year now.
All my tests come back okay. My thyroid tests have been normal from what I'm told. Finally my GYN of all people tested my vitamin D and found it to be, as she called it, "very, very low.