Yes, I have Erythromelalgia as well. (i'm 17...just fyi)
Though I don't experience the symptoms all the time, some of my "episodes" have lasted up to 5 days. Right now, my hands are pretty much on fire.
unfortunately, I also have reynauds, which is when my hands and feet get too cold, the turn white, gray, purple and blue. and its painful
so ive got two opposites.
how did you find out that you had EM?