Erythromelalgia is a infrequent neurovascular condition characterized by occasional episodes of intense severe burning sensation, redness, and warmth in the appendages, particularly hands and feet. The name “erythromelalgia” is originated from the Greek words “erythros” meaning crimson, “melos” meaning extremity, and “algos” meaning suffering. https://www.phlebotomytrainingtoday.com/what-is-erythromelalgia/