(redirected from Heat-stroke)
Also found in: Dictionary, Thesaurus, Medical.


A condition of elevated body temperature.



the accumulation of excess heat in the body of humans or animals, with an elevation of body temperature, caused by external factors that hinder the transfer of heat to the external environment or increase heat intake from outside the body. Hyperthermia arises when there is maximum strain on the physiological mechanisms of thermoregulation (perspiration, dilation of cutaneous blood vessels, and so forth); if the causes are not removed, it progresses, ending with heat stroke at a body temperature of approximately 41°-42° C.

Hyperthermia is accompanied by an increase of metabolism and qualitative disturbances of it, loss of water and salts, and disruption of blood circulation and the delivery of oxygen to the brain, causing agitation and sometimes convulsions and fainting. High temperature during hyperthermia is tolerated less readily than it is in other feverish diseases. The development of hyperthermia is promoted by an increase in heat production (for example, during muscular work), disruption of thermoregulation mechanisms (with narcosis, drunkenness, and certain diseases), or age-related failure of these mechanisms (in very young children). Artificial hyperthermia is used in treating certain nervous and slowly progressing chronic diseases.


References in periodicals archive ?
Things may be changing: In January, a high school football coach in Louisville, Kentucky, was charged by the state with reckless homicide for the heat-stroke death of a player there.
The Health Department directed setting up a separate ward in District Headquarter and Taluka Hospitals for treatment and providing life saving medicines for the expected heat-stroke patients.
PESHAWAR -- Khyber Pakhtunkhwa Senior Minister for Local Government and Rural Development and Parliamentary Leader of Jamaat-e-Islami, Inayatullah Khan Monday while expressing deep sorrow on heat-wave in the province especially in Peshawar, has directed for declaring emergency in the hospitals to treat the victims of heat-stroke.
Peshawar -- Khyber Pakhtunkhwa (KP) Senior Minister for Local Government and Rural Development of Jamaat-e-Islami, Inayatullah Khan has declared emergency in the hospitals on Monday to treat the victims of heat-stroke.