Patient : Any time I do anything that requires me to use my arms and thus also some back muscles, even tasks as simple as vacuming, my uper back muscles tighten up especaiily at night when I'm sleeping, often causing my arms to go numb do to nerves being pinched. This lasts all month long EXCEPT when I am experiencing my menstral cycle. I am wondering if there is a hormone that would cause this or something else
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