Multi-organ damage in exertional heat stroke.

Exertion-induced heat stroke is a relatively rare disorder in the moderate maritime climate of The Netherlands. Serious complications of excessive physical activity rarely occur. We describe a marathon runner with multi-organ failure after exertion-induced heat stroke. The patient developed shock, diarrhoea, coma, rhabdomyolysis, acute renal failure, liver cell damage and disseminated intravascular coagulation but recovered completely.