Drink fluids to replace those lost through sweat, and rest in a cool place until the headache passes. Lying down is often helpful in relieving headaches. The body attempts to conserve the fluids it has left by decreasing blood flow to the skin and lowering blood pressure. The lack of blood flow to the skin makes it cold, pale, and clammy. The body tem- perature will drop below normal.
Medical attention is necessary to treat heat exhaustion.
The individual should be moved to a cool location but kept warm because of the body's subnormal temperature. Drinking small amounts of cool, lightly salted fluids will help replace fluids and sodium. Inability to sweat The body has shut down its thermo-regulatory system because it is so low on fluids. Body temperature will sky-rock because it can't lose heat by the evaporation of sweat. If the body temperature isn't brought under control, it can lead to brain damage and death.