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Heat stroke is an acute temperature elevation caused by exposure to excessive heat, or combination of heat and humidity, that overwhelms the heat-regulating mechanisms of the body. The latter is a relatively rare side effect of many drugs, particularly those that affect the central nervous system .
Heat exhaustion: Heat exhaustion is the body's response to an excessive loss of water and salt that usually happens from sweating a lot, according to the CDC. It can cause heavy sweating, fatigue ...
The second way your body cools itself down is by dilating vessels and upping your heart rate, which helps bring heat and blood to the surface of your body and helps releases that excess heat.
Here are symptoms of heat-related emergencies to look out for and quick actions for first aid. Heat Rash. Heat rash is a skin irritation caused by excessive sweating in hot and humid weather ...
Heat stroke occurs when thermoregulation is overwhelmed by a combination of excessive metabolic production of heat (exertion), excessive heat in the physical environment, and insufficient or impaired heat loss, resulting in an abnormally high body temperature.
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] It can affect any or all anatomical systems. [2]
Know the signs and what to do if someone is unwell in hot weather.
The human body maintains a core body temperature at around 37 °C or 98.6 °F through mechanisms controlled by the thermoregulatory center within the hypothalamus.When the body is exposed to high ambient temperatures, intense physical exertion, or both, the thermoregulatory center will initiate several processes to dissipate more heat: [9] [11] [12]