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.

Experts believe that in CRPS, nerves become overly sensitive. Painful signals become more painful. And common stimuli, such as light touch and temperature changes, also are experienced as pain.

To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »