RSD or Reflex Sympathetic Dystrophy (now known as Complex Regional Pain Syndrome or CRPS) is a problem caused by malfunctioning of the autonomic nervous system. It usually occurs after a traumatic injury. It is characterized by intense pain, usually burning in nature, which seems to be out of proportion to the event which caused the problem.
Other symptoms include muscle spasms or tremors, increased sensitivity to even light touch, atrophy, increased sweating, color and/or temperature changes, altered hair and nail growth. Patients may also experience many internal manifestations such as hoarseness, sensitivity to light and sound, digestive issues, bladder problems, irregular heart rhythms, gynecologic issues, memory loss and compromised immune system functioning.