Complex regional pain syndrome is an unusual neurological disease in which the nervous system
malfunctions after a traumatic event, such as an accident, a fall, surgery, or
even after a minor injury such as a sprain. This malfunction causes pain that
may seem severe compared to the original injury and may remain long after the
injury has healed. Another name for complex regional pain syndrome is reflex sympathetic dystrophy.
Skin sensitivity, excessive sweating, numbness, and tingling may
also occur with complex regional pain syndrome. This condition is not understood
well. And it is difficult to diagnose and treat.