Hyperthermia is the general name given to a variety of heat-related illnesses. The human body usually can regulate its temperature. When the body gets too hot, it uses several strategies to cool down, including sweating. But if a person spends too much time in the heat without taking in enough fluids, the body's cooling processes can't work properly. When the body becomes dehydrated, it can no longer cool itself by sweating. When this happens, body temperature can rise high enough to make the person sick.
Cool, moist skin with goose bumps when in the heat Heavy sweating Faintness Dizziness Fatigue Weak, rapid pulse Low blood pressure upon standing Muscle cramps Nausea Headache
A blood test, A urine test ,Muscle function tests ,Imaging tests
Rest in a cool place, Drink cool fluids Try cooling measures, Loosen clothing