| Re: What could this be???
Hi,
I get the same pain and it actually is a pinched nerve in my upper back/shoulder area. Instead of rubbing your arm try having someone massage your upper back, concentrating on the muscles next to your spine. If your arm feels better that's likely the cause. Pain can radiate from differnt areas than where it originates. Sometimes my chest hurts under my left breast and I found out it was actually my shoulder on the same side.
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