Erythromelalgia is a rare vascular disorder characterized by periodic episodes of intense severe burning sensation, redness, and increased temperature in the limbs, particularly hands and feet. The name “erythromelalgia” is originated from the Greek terms “erythros” meaning red, “melos” meaning appendage, and “algos” meaning suffering. https://www.phlebotomytrainingtoday.com/what-is-erythromelalgia/