Erythromelalgia is the name applied to the clinical syndrome of red, hot extremities. Most often, the feet are involved; less often the hands are also involved; rarely, the face (ears especially) may be involved. In this short video, Dr. Mark Davis describes what this syndrome is, what is known about why it happens, how it is diagnosed and managed. The video also describes the Mayo Clinic experience with this syndrome and what Mayo Clinic has to offer patients who decide to come for an opinion concerning their condition.