Recognizing the symptoms of such illnesses and reacting properly can save lives. The human body tries to maintain a constant temperature. When cooling is needed, it tries to dissipate excess heat by moving blood to the skin and by evaporating sweat. When it is too hot for the blood's heat to dissipate through the skin, trouble can set in.
Ointments can help mild cases.
If the blisters break, apply a dry sterile dressing. Serious cases should be seen by a doctor. Firm pressure on cramping muscles or gentle massage can relieve spasms. Give sips of water, but stop if nausea occurs. The victim may faint and vomit.