Heat exhaustion can occur anywhere there is poor air circulation, such as around an open furnace or heavy machinery, or even if the person is poorly adjusted to very warm temperatures. The body reacts by increasing the heart rate and strengthening blood circulation. Simple heat exhaustion can occur due to loss of body fluids and salts. The symptoms are usually excessive fatigue, dizziness and disorientation, normal skin temperature but a damp and clammy feeling. To treat heat exhaustion, move to the victim to a cool spot and encourage drinking of cool water and rest.
Heat stroke is much more serious and occurs when the body's sweat glands have shut down.
Some symptoms of heat stroke are mental confusion, collapse, unconsciousness, fever with dry, mottled skin. The first thing you can do is move the victim to a cool place out of the sun and begin pouring cool water over the victim. Fan the victim to provide good air circulation until medical help arrives. The first thing to do is get the victim away from the poison. Then use provide treatment appropriate to the form of the poisioning.