Ok, lets see here. Epson salts for cramping and spasms. I had the same problem today and the soak and some stretches while soaking relieved. Did almost cry through stretching. Thank goodness for DD hugs, helping me through them!
Spreading well for me it was mirror pains\burning and minor swelling on the other side. I have variable temperature control with my rsd to hot or to cold. It happens on both sides. For me the mirrored side is a was a lower pain degree but not to much lower. Rarely is it higher but it does happen periodically.
just my 2 cents,
rain