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Related to heatstroke: heat exhaustion, dehydration


profound disturbance of the heat-regulating mechanism of the body, also known as sunstroke. It is characterized by extremely high body temperatures and sometimes by convulsions and coma. The skin is usually hot and dry because the body-cooling process of sweating has ceased. In some cases, however, the skin may feel relatively cool because blood vessels just below the skin have constricted and the overheated blood is not being carried to the surface; an actively exercising person with heatstroke may be sweating freely. Heatstroke is a rare disorder and is more common among elderly and obese people and those with debilitating diseases. Heatstroke, unlike heat exhaustionheat exhaustion,
condition caused by overexposure to sunlight or another heat source and resulting in dehydration and salt depletion, also known as heat prostration. The symptoms are severe headaches, weakness, dizziness, blurred vision, and sometimes unconsciousness.
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, is considered a serious threat to life; treatment must be swift to prevent death or serious brain damage from high body temperature. The body should be cooled as quickly as possible by removing the patient to a cool shady place and applying cold water or ice water to the skin. See first aidfirst aid,
immediate and temporary treatment of a victim of sudden illness or injury while awaiting the arrival of medical aid. Proper early measures may be instrumental in saving life and ensuring a better and more rapid recovery.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an acute illness of man and animals caused by impaired thermoregulation after prolonged exposure to high environmental temperatures.

In man, heatstroke may develop during work in a hot factory such as a foundry or steel mill, during outdoor work in regions with a hot climate, or during long marches in the heat of the day. Heatstroke may also arise from impaired heat balance in cardiovascular and thyroid diseases, obesity, and dehydration through diarrhea or vomiting. It readily develops in children under one year of age because the thermoregulatory mechanisms are still incomplete.

Heatstroke may be mild, moderate, or severe. The mild form is marked by weakness, headache, nausea, and rapid pulse. Considerable weakness, stupor, fainting, vomiting, and elevation of the body temperature to 39°–40°C are indicative of moderate heatstroke. The severe form sets in abruptly upon prolonged exposure to excessive heat, with loss of consciousness, convulsions, rapid and shallow breathing, slowing of the blood circulation, and elevation of the body temperature to 41°–42°C. This form may be fatal.

First aid consists in removing the victim from the heat, applying cold compresses, and giving him cold water to drink if he is conscious. A victim of severe heatstroke should lie on his side to avoid swallowing vomit. Closed cardiac massage and mouth-to-mouth or mouth-to-nose artificial respiration are used when necessary. Reanimation (resuscitation) in a hospital includes general hypothermia and prevention of such complications as brain or lung edema. Heatstroke may be prevented by regular medical examinations of persons whose work involves exposure to high temperatures and by complying with health regulations regarding clothing, long marches in hot weather, and conditions in hot places of work:


Rukovodslvopo gigiene truda, vol. 1. Moscow, 1965.
Rukovodstvopo tropicheskim bolezniam, 3rd ed. Moscow, 1974.
In animals, heatstroke develops when animals are kept for a long time in hot, crowded, and poorly ventilated places, during transportation or overland drives, or during work in the heat of the day. It is manifested by exhaustion (sometimes preceded by excitation), sweating, labored breathing, rapid pulse, elevated body temperature, unsteady movements, and occasionally convulsions.
Treatment involves keeping the animals in a cool or shady place, applying a cold medium to the head, injecting cardiac stimulants, and bloodletting if symptoms of lung edema are present. Heatstroke may be prevented by observing the rules for maintaining, transporting, and using animals.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A heat-exposure syndrome characterized by hyperpyrexia and prostration due to diminution or cessation of sweating, occurring most commonly in persons with underlying disease.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


a condition resulting from prolonged exposure to intense heat, characterized by high fever and in severe cases convulsions and coma
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
'Some people could develop symptoms of heatstroke, such as dizziness and nausea, even though they're on trains not exposed to direct sunlight,' said Toshiki Mano, a professor at Chuo University who is also a physician well versed in heatstroke.
In previous years, authorities have recorded cases of heatstroke, resulting from spending several hours under the sun and failing to drink enough water.
On the other hand, in order to provide immediate medical assistance to people who are suffering from heatstroke or viral gastroenteritis at government hospitals, stocks of various medical facilities, including drips, injections and others, have been increased.
Confusion, agitation, slurred speech, irritability, delirium, seizures and coma - all were said to result from heatstroke.
2018's heat wave killed sixty-five people from heatstroke in Karachi, and the deadly 2015 heat wave caused the death of nearly 2000 people from dehydration and heat stroke in Sindh.
Veterinarians remind pet owners that water is important to dogs and cats because it not only provides them with the nutrients they need to properly function, but it also hydrates them-an important element needed in order to avoid heatstroke.
Manifestations of heatstroke range from mild cramping to exhaustion to the potentially deadly heatstroke itself.
However, the deputy commissioner of Jamshoro and chairman of the Mela Committee Fareeduddin Mustafa has denied the reports of deaths due to heatstroke and contended that only seven people had died in the last four days in Sehwan city.
The letter identifies three UMD faculty: head football coach DJ Durkin, strength and conditioning coach Rick Court and athletic trainer Wes Robinson, as being "involved" in the "incident" where the college athlete suffered heatstroke. Durkin and Robinson have been placed on administrative leave and Court has since resigned.
agitation, irritability, fever, and coma can all result from the heatstroke, he
KARACHI -- Sindh Rangers has set up 15 heatstroke relief centers in different parts of the metropolis to provide medical assistance to affectees, in view of situation due to sizzling weather.