Complex Regional Pain Syndrome (CRPS) is a chronic pain condition typically affecting a limb after injury, surgery, stroke, or heart attack, characterized by severe, persistent pain that is disproportionate to the initial cause. The pain is often described as burning, shooting, or throbbing, and is accompanied by sensory, motor, autonomic, and trophic changes such as swelling, skin color changes, temperature asymmetry, sweating abnormalities, and decreased mobility. CRPS is divided into two types: Type I, where no nerve injury is identified, and Type II, which involves confirmed nerve damage.