Persons experiencing any of these symptoms should consult a doctor. Definitions Heat stress occurs when a strain is placed on the body as a result of hot weather. Heat fatigue is a feeling of weakness brought on by high outdoor temperature. Symptoms include cool, moist skin and a weakened pulse. The person may feel faint.
Heat syncope is sudden dizziness experienced after exercising in the heat.
The skin appears pale and sweaty but is generally moist and cool. The pulse may be weakened, and the heart rate is usually rapid. Body temperature is normal. Heat cramps are painful muscle spasms in the abdomen, arms, or legs following strenuous activity. The skin is usually moist and cool and the pulse is normal or slightly raised.