The effects of excessive heat may be either heat exhaustion or heat stroke. Both these conditions are caused by too high a temperature in the atmosphere, but the signs and symptoms are quite different. Humid surroundings also add to the problems. Loss of body fluids and salt is an important factor complicating heat-related problems. Signs and Symptoms Heat Exhaustion Heat Stroke Headache, Dizziness, Nausea, Vomiting and occasionally Abdominal Cramps Occurs suddenly but may follow untreated exhaustion Unconsciousness follows Unconsciousness rapid but may come after headache Face is pale and pulse becomes weak Pulse is full and bounding.
Face becomes flushed.
If the patient is unconscious, follow the general rules of treating an unconscious patient. Observe for signs of heat stroke. Heat Stroke Bring down body temperature as quickly as possible. Keep the patient in the coolest possible place. The temperature begins to fall.