I have been diagnosed to have IC, and when I have a flare up I seem to have spasms, or muscle spasms, down my right leg that occur every 10 seconds or so. This will continue for hours or until I take a walk or sometimes I get relief from a hot sit bath. Is this part of IC, which normally I have a dead ache in my pelvic area, but the spasms I have tried to explain most always accompany the pelvic pain.