RSDS or Reflex Sympathetic Dystrophy Syndrome is an abnormality of the central nervous system which often results from relatively minor trauma. It is also known by many other terms including causalgia, Sudeck’s atrophy, complex regional pain syndrome and shoulder-hand syndrome.
Whatever name it is called by, the main symptom is a severe burning pain often accompanied by limited movement of an extremity. Because of a limited blood supply to the affected area, an atrophy or dystrophy often occurs.
Our office has handled many severe RSD cases over the years, and The Arthritis Foundation has now published a very good FAQ online entitled RSD: YOUR QUESTIONS ANSWERED. I highly recoommend it as a strting point for your research.