Complex Regional Pain Syndrome (CRPS) is a chronic pain condition typically affecting an arm or leg, often developing after an injury or trauma. It’s characterized by severe, persistent pain that may be accompanied by changes in skin color, temperature, and swelling in the affected area. The pain can be disproportionate to the original injury and may spread beyond the initial site. While the exact cause of CRPS is not fully understood, it is believed to involve abnormal responses of the nervous system. Early diagnosis and treatment are crucial for managing symptoms and improving quality of life.