[Heat stroke and burns resulting from use of sauna].

We describe a case of severe heat stroke resulting from exposure to extreme heat in a sauna for an unknown period of time. The patient sustained 20% 2nd degree burns. On arrival at the emergency department, the patient's temperature was 40.5 degrees C. At the critical care unit, the patient developed severe multi-organ failure and critical polyneuropathy. Severe heat stroke is a rare diagnosis in Denmark. The treatment is symptomatic and the prognosis is grave, especially in combination with severe burns.