This is a type of chronic, long-lasting, pain. In most cases, it develops in an arm or a leg that you have previously injured. With CRPS, you may have unexplained pain that won't go away. It may be severe, and it may spread.
If you're dealing with CRPS, you know how frustrating it can be. You hurt, and you don't know why. You feel like you should have healed by now, and no one can tell you why you aren't getting better. Although there's no cure for CRPS, there are things you can do to get some relief.