Even though the diagnosis targets proximal limbs (I looked it up - section of limbs closest to core of body, so thighs, upper arms), PMR often involves the shoulders and neck. Also, at times my ankle or calf would hurt, go figure. I suspect the pain is free to move around a bit. Don't know about cortisone, but soon after I started prednisone I felt much better. Now about 90-95% normal and on 10 mg.