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Heat illness is a spectrum of disorders due to increased body temperature. It can be caused by either environmental conditions or by exertion.It includes minor conditions such as heat cramps, heat syncope, and heat exhaustion as well as the more severe condition known as heat stroke. [1]
As in other mammals, human thermoregulation is an important aspect of homeostasis. In thermoregulation, body heat is generated mostly in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. [1] Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid.
Heat exhaustion becomes much more common within pregnant women who perform the same tasks they had while not pregnant. While their symptoms are no different than the most common, such as dizziness, fatigue, and dehydration, the extreme adverse effects include increased preterm births, miscarriages, and birth defects.
The incidence of heat stroke is higher among men; however, the incidence of other heat illnesses is higher among women. [29] The incidence of other heat illnesses in women compared with men ranged from 1.30 to 2.89 per 1000 person-years versus 0.98 to 1.98 per 1000 person-years. [29]
Hyperthermia from neurological disease may include little or no sweating, cardiovascular problems, and confusion or delirium. Other signs and symptoms vary. Accompanying dehydration can produce nausea, vomiting, headaches, and low blood pressure and the latter can lead to fainting or dizziness, especially if the standing position is assumed ...
Over 45 for men and over 55 for women. Family history. Having a family history of early heart disease. Sex. People born male are at increased risk. Congenital defects. Having problems with your ...
But newer studies show that average internal temperature for men and women is 36.4 °C (97.5 °F). [10] No person always has exactly the same temperature at every moment of the day. Temperatures cycle regularly up and down through the day, as controlled by the person's circadian rhythm. The lowest temperature occurs about two hours before the ...
One form of homeostasis is thermoregulation. Body temperature varies in every individual, but the average internal temperature is 37.0 °C (98.6 °F). [1] Sufficient stress from extreme external temperature may cause injury or death if it exceeds the ability of the body to thermoregulate.