The body can no longer control its temperature. The victim should be transported to the nearest medical care facility. While awaiting transport, cool the body with running water, wet cloths or ice packs. Do not force fluids if the victim is unconscious. Early stages of heat illness together with fatigue can rob workers of normal brain oxygen.
Heat illness is much easier to prevent than to treat, but it takes time and preparation.
Allow yourself frequent short breaks for cooling and thirst quenching. A well-balanced diet supplies essential protein, calories, vitamins, and minerals for muscle wear and tear. A handful of raisins has more energy and minerals than a salt tablet or a quart of thirst quenchers. A wide brim, open-weave hat will help to keep the entire head cool. Headaches, dizziness, confusion, slowed speech or reflexes, unusual irritability, lack of concentration, hot dry skin or lips, and dark concentrated urine are all early warning signs.