I would have to wonder about this. I know Lupus symptoms are real similar to fibromyalgia sx. I would encourage them to rule out Lupus which can affec the kidney in this manner.
I have had two different occasions where my GFR went down to 53 and my creatinine went up, and I had high protein in my 24 hour urine.
Fortunately, the kidneys have come back both times.
Guess this doens't help, but maybe if you are having difficulties, it won't last for you either!
My best,
Karen
I worked with a woman who had fibromyalgia for years and then later on... developed kidney problems.