I definitely have different symptoms now than when the PMR started about a year ago (on prednisone 8 mos, down from 20 mg to 9). I've read one of the symptoms of PMR described as "cramping" but what I had originally was not like any cramps I have ever had before. In the morning or after sitting it was just extremely painful to move my arms or legs a small distance. To get out of bed or a chair required many small painful movements. Smooth, coordinated motion was out of the question. My shoulders were so stiff that I had to work my hands up a wall multiple times a day to keep my shoulders from freezing up. Now it is mainly pain in my upper body and movement is not a problem. I thank prednisone for that.