Erythromelalgia is a uncommon vascular condition characterized by occasional episodes of intense severe burning sensation, discoloration, and heat in the appendages, particularly hands and feet. The name “erythromelalgia” is originated from the Greek terms “erythros” meaning scarlet, “melos” meaning appendage, and “algos” meaning discomfort. https://www.phlebotomytrainingtoday.com/what-is-erythromelalgia/