HEALTH TOPICS 
Complex Regional Pain Syndrome (CRPS)
What Is It?
Complex Regional Pain Syndrome (CRPS) is a painful and long-lasting condition. CRPS usually causes severe, constant, burning pain in the affected arm or leg.
The cause of CRPS remains unknown. However, this condition can be triggered by damage to nerve fibers in tissue that has been injured. Smoking is a risk factor for the condition.
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