Erythromelalgia(Erythermalgia) is a syndrome of red, warm, congested, and burning painful extremities. Presently, there are three distinct clinicopathological entities: erythromelalgia, primary erythermalgia, and secondary erythermalgia. Secondary erythermalgia usually arises at an adult age either in association with a detectable underlying disorder or with the use of vasoactive drugs. Typically, it responds to proper treatment of the underlying disorder or discontinuation of the causative drugs.