I am having painful, burning sensation in back, legs, arms - definitly not muscles or joints. The MD thought pulled or irritated nerves when it was just in the legs but it's spread. I had started taking Black Cohash about 2 weeks before onset (500mg). Am now stopping in case it's causing the burning. Has any one had a similar problem?? I checked Dr. Lee's & Northrup's books but no specific info. I am 50ish and have been of conjugated (bioidentical) estrogens and progesterone cream for years (early hysterectomy).