Tip - Heat Exhaustion: Facts on First Aid and Long-Term Effects

Heat exhaustion is a physical condition in which a person's body has overheated due to fatigue, dehydration, working or exercising in extremely hot conditions, or over exposure to heat and sun. Symptoms include nausea, vomiting, headache, extreme thirst, muscle cramps, and a weak and rapid pulse. Heat exhaustion should be treated by a medical professional.