1. A throbbing and burning pain in the skin often caused by exertion or heat, affecting the hands and feet, accompanied by a dusky mottled redness of the parts with increased skin temperature.
2. A rare disorder of middle age, characterized by attacks of severe burning pain, reddening, hyperalgesia and sweating, involving one or more extremities, usually both feet; the attacks can be triggered by warmth, and are usually relieved by cold and limb elevation.
3. A condition affecting the extremities, especially the feet, marked by burning and throbbing sensations that come and go.