The document discusses Complex Regional Pain Syndrome (CRPS), formerly known as Reflex Sympathetic Dystrophy. It notes that CRPS typically affects around 200,000 people in the US annually, usually starting in one limb and potentially spreading to other areas in 75-80% of cases. While only 8-10% of patients experience full body symptoms, it can occur in any part of the body. The document encourages educating oneself about CRPS and spreading awareness of the condition described as the most painful chronic pain.