Upper arm pain
Does anyone have experience with upper arm pain? Could this be arthritis? The pain seems to be in the upper arm muscles and not necessarily the rotator cuff (although I assume they are all related). This is not injury related as both arms have it, one more than the other. It is the kind of pain that makes me wince when I put an arm behind me to take something out of a back pocket. Or when I put on a shirt or coat. It aches sometimes in a dull way at night. I'm 50, in otherwise great health.