Heat syncop and heat exhaustion are common heat injuries. Usually, the symptoms of heat syncope are mild, and the probability of occurrence is higher than that of heat exhaustion. Although both can cause dizziness symptoms, the fundamental difference is whether the body temperature center of the hypothalamus of the brain is abnormal. Basically, the body temperature will be maintained at 37°C during heat syncope, but heat exhaustion is caused by the abnormality of the body temperature center, the body cannot expel heat, and the body temperature rises to 38°C. If it is not cooled in time, once the core temperature (ear temperature) , armpit temperature plus 1 degree Celsius) more than 40 degrees Celsius, coupled with central nervous system abnormalities such as hallucinations, confusion, etc., it evolves into heat stroke, which not only causes multiple organ failures ranging in severity, and may even lead to death in severe cases.
Heat syncope and heat exhaustion have different causes
In principle, heat syncope does not turn into heat exhaustion, because the causes of the two are different. Generally speaking, heat syncope may be caused by internal or external factors, such as fainting from standing for a long time in the hot sun; heat exhaustion is mostly caused by prolonged exposure to high temperature environment, resulting in the loss of water and salt in the body, and the abnormality of the body temperature center. If the heat in the body cannot be excreted, symptoms such as dizziness, headache, nausea, and vomiting will occur. People suffering from heat exhaustion should seek emergency medical attention and avoid activities in high temperatures for a week.
When will heat syncope and heat exhaustion return? What should I pay attention to?
Heat syncope usually only needs to move the patient to a cool place to rest, and help to replenish enough water. It can be recovered in about an hour to a day, and there is no need to worry about the follow-up; Heatstroke can be life-threatening. Although heat exhaustion may recover within 72 hours, the body temperature center loses its protective function and becomes abnormally sensitive. Once the external temperature rises, it will cause physical discomfort. Therefore, it is recommended to avoid activities or activities in high temperature environments for a week. Intense exercise.
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