Overview Heat Stroke The human body regulates heat production and dissipation to maintain a normal body temperature. The body lowers its temperature through peripheral vasodilation, increased subcutaneous blood flow, dissipating heat into the air, and sweating and evaporation. If heat production and dissipation become unbalanced, body temperature rises rapidly. In hot environments, excessive sweating depletes the body's water and salt, leading to dehydration. Reduced fluid and salt levels can cause heat cramps or fainting due to lack of blood flow to the muscles and brain. The result of these processes is heatstroke. Severe heatstroke can be fatal, but it can be avoided with proper prevention and treatment. Symptoms of Heatstroke Mild heatstroke (Level 1) Ischemia and shunting of blood to the brain and other major organs can cause fainting. Drinking water without salt or electrolytes can lower blood salt levels, potentially causing painful heat cramps. Moderate heatstroke...
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