i have a ton of trouble with cramping [like right now] when the barometer goes up and down. i'm not sure where you live, but i have often thought in the fall, that my rsd is spreading only for it to calm down when the weather settles. now that i know to expect it, i find that using ibuprofen often, and using heat, helps until the weather change happens. also my mind is at ease with it now.
i have a friend with rsd, that i have written to for years, who lives in CA, and she goes through the same thing even though her weather is so different from mine.
hope this helps ..... joan