Complex Regional Pain Syndrome (CRPS) is a chronic pain condition that typically affects an arm or a leg. It is characterized by continuous, intense pain that is disproportionate to the initial injury or trauma. Other symptoms may include swelling, changes in skin temperature, and limited range of motion. Treatment for CRPS often involves a combination of physical therapy, medication, nerve blocks, and psychological support. Early diagnosis and intervention can improve outcomes, so it is important to seek medical attention if symptoms of CRPS are present.