Reflex sympathetic dystrophy or Sudeck' s atrophy is a syndrome that can usually be followed by a traumatic insult. This disorder is accompanied by signs and symptoms of vasomotor instability, trophic skin changes, and rapid development of bony demineralization. This report presents a case with reflex sympathetic dystrophy syndrome secondary to organophosphate intoxication induced neuropathy. The patient was threated with calcitonin well. © 1994 Springer-Verlag.