Heat stroke is hardly seen in Malaysia. However, it occurs commonly in Saudi Arabia during the Haj season. Many Malaysian pilgrims are affected every year and some die. Having faced this environmental hazard for eight years, the Malaysian Medical Mission, sent each year to look after our pilgrims, modified its treatment strategy in 1988 and successfully decreased the overall morbidity and mortality of affected patients without the use of sophisticated equipment. A brief account of the management of 17 cases seen in 1988 is given. Only one died following treatment. The rest recovered fully without any residual neurological deficit or other complications.