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Complex Regional Pain Syndrome (CRPS)

Symptoms:

  • Burning or shooting pain
  • Redness and swelling of the skin
  • Changes in skin temperature or sweating
  • Muscle spasms and restricted range of motion
  • Advanced: slowed hair growth, entire limb engulfed by severe pain

Overview

This chronic condition, also known as reflex sympathetic dystrophy, is an unexplained feeling of pain and discomfort that most commonly affects an arm, leg, hand or foot. Often, it begins in the hand or foot and then spreads to affect the entire limb.

Causes

The exact cause of complex regional pain syndrome is not fully understood. It may be related to a variety of causes. CRPS commonly develops after an illness or traumatic injury to an extremity. In some people, the syndrome may be linked to an abnormality of the sympathetic nervous system. Other cases may be related to an abnormality of the immune system.
Types of CRPS
There are two types of CRPS. Type I, also known as Reflex Sympathetic Dystrophy, develops without any obvious sign of direct nerve injury. It commonly develops after tissue trauma. Type II, which was once called causalgia, is related to direct injury of the nerves.

Treatment

CRPS can be intensely painful and it can be difficult to treat, especially if it is not diagnosed early. Treatment options may include hot and cold compresses, anti-inflammatory and pain relief medications, and physical therapy. Nerve block injections and nerve stimulation techniques may also be effective.