I know this pain all too well. It happens in my feet (toes to the arch) often. As it starts to subside the toes violently thrash back and forth.

My RSD burns hot in that foot. I elevate the foot, try not to move it and pack it with ice. If I can reduce whatever inflammation set it off, the muscle cramps start to subside. i keep the foot rested until I am sure all the inflammation subsided or it will return again. I get this much more in the summer with the heat. I figure the heat make the swelling and inflammation worse and sets it off.

I hope this helps. I have never found a medicine or doctor to help with this issue.

kathie