Education is what survives when what has been learned has been forgotten. Many health problems can be caused by too much heat. The factors that contribute to these health problems are many, and people differ in how prone they may be. Heat rash occurs when the sweat glands of the skin become clogged due to extreme sweating. Skin feels prickly.
Heat rash disappears when the person is returned to cooler temperatures.
Infection can occur if the problem is not corrected. This is helped by replacing the lost salt and electrolytes, usually taken together with lots of water as well. Fainting due to heat is caused by the same factors that cause other fainting. People most likely to faint in the heat are those unused to working in it. Heat exhaustion is caused by excessive sweating.