If the body becomes too overheated, the sweat control mechanism of the body malfunctions and shuts down. Heat exposure injuries are a threat in any hot environment, especially in desert or tropical areas and in the boiler rooms of ships. Heat Cramps Heat cramps are muscular pains and spasms resulting from the loss of water and salt from the body. Excessive sweating may result in painful cramps of the muscles of the abdomen, legs, and arms. Heat cramps also may result from drinking ice water or other cold drinks either too quickly or in too large a quantity after exercise.
Heat cramps are often an early sign of approaching heat exhaustion.
Faintness or dizziness. Nausea and vomiting. Exhaustion and fatigue. Move the casualty to a cool or air conditioned area. If the casualty can drink, give him or her one-half glassful of cool water every 15 minutes.