Reflex Sympathetic Dystrophy Syndrome (RSD) is also known as Complex Regional Pain Syndrome (CRPS). RSD/CRPS is a chronic multi-symptom, multi-system, neurological syndrome usually affecting one or more extremities, but may affect virtually any part of the body. It is characterized by:
>severe burning pain
>pathological changes in bone and skin
>excessive sweating
>tissue swelling
>extreme sensitivity to touch

There are Two Types of CRPS - Type I and Type II.
>CRPS Type I (also referred to as RSD) - cases in which the nerve injury cannot be immediately identified
>CRPS Type II (also referred to as Causalgia) - cases in which a distinct "major" nerve injury has occurred
>Since there is no single laboratory test to diagnose RSD/CRPS, the physician must assess and document both subjective complaints (medical history) and, if present, objective findings (physical examination).

RSD/CRPS development does not appear to depend on the magnitude of the injury. The sympathetic nervous system seems to assume an abnormal function after an injury. It is as though the pain receptors to the brain become stuck in the on position indicating that there is a current injury to a region of the body. For the best description of RSD/CRPS, and related articles, go to: www.rsds.org/3/clinical_guidelines/index.html

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