Red, painful, or blistering and peeling skin. If the skin blisters, seek medical aid. People with fair skin should be especially cautious. Heat Cramps Heavy sweating drains a person's body of salt, which cannot be replaced just by drinking water. Painful cramps in arms, legs or stomach which occur suddenly at work or later at home.
Cramps are serious because they can be a warning of other more dangerous heat-induced illnesses.
If the cramps are severe or don't go away, seek medical aid. Fainting Not enough blood flowing to the head, causing loss of consciousness. Fainting may be due to a heart attack or other illness. Drink fluids regularly. Workers should check on each other to help spot the symptoms which often precede heat stroke.