Complex Regional Pain Syndrome (CRPS)
Complex regional pain syndrome (CRPS) is a painful condition of the nervous system involving one or more of the extremities. The condition typically is a result of trauma to a body part, such as a fracture, soft tissue injury, or surgery. Two subtypes of CRPS have been recognized:
- Type I (the form also known as reflex sympathetic dystrophy) corresponds to patients with CRPS without evidence of peripheral nerve injury and represents approximately 90 percent of clinical presentations.
- Type II was formerly termed “causalgia” and refers to cases in which peripheral nerve injury is present.