Is unusual painful cramps and inordinate stiffness due to PMR?
Patient: several years ago I was diagnosed as having PMR. I took Prednisone for a period of time but am not on any medication at this time. I do however, have inordinate stiffness and at night shortly after laying down and following exercise I predictably experience unusually painful cramps. Is this possibly a further symptom of PMR? Doctor: PMR can cause muscle and joint pain/stiffness but not commonly causing muscle cramps..it can be due to low potassium. drink plenty plenty of water and eat bananas  on daily basis .