Complex Regional Pain Syndrome (CRPS) is a type of chronic, long-lasting, pain. In most cases, it develops in an arm or a leg that you have previously injured. With CRPS, you may have unexplained pain that won’t go away. It may be severe, and it may spread.

Symptoms:

• Continuous burning or throbbing pain, usually in the arm, leg, hand or foot
• Sensitivity to touch or cold
• Swelling of the painful area
• Joint stiffness, swelling and damage
• Muscle spasms, tremors and weakness (atrophy)
• Decreased ability to move the affected body part