Overview of Extreme Heat Illness Heatstroke, Exhaustion, Cramps and Rash

Sweating is your body’s way for cooling itself. During extremely hot weather coupled with high humidity, sweating may not be enough to cool your body. In this condition, its temperature could rapidly rise to dangerously high levels that results in you experiencing a heat illness, aka hyperthermia.

When the air is humid (air with high water content), your body’s natural sweat evaporation cooling system markedly decreases. This decrease causes a corresponding reduction in your ability to release your body systems natural production of heat. And a very high body temperature can damage your brain or other vital organs.

Most heat illnesses occur from exercising or staying in a hot, humid environment for too long. Heat-related illnesses include:

  • Heat exhaustion is an illness that precedes heatstroke
  • Heat rash is a result of skin irritation from excessive sweating
  • Heat cramps are your muscles pains or spasms that occur during heavy exercise
  • Heat stroke is a life-threatening illness in which body temperature may rise above 106° F in minutes

Some common sense approaches to help prevent heat illness’ rapid rise in body temperature are:

Other conditions that can limit your body’s ability to regulate temperature include:

The risk for heat-related illness may increase with the use of the following drugs:

  • psychotropics ~ haloperidol, chlorpromazine
  • diuretics (water pills) ~ affect fluid balance in the body
  • Parkinson’s disease medications ~ can inhibit perspiration
  • tranquilizers such as phenothiazines, butyrophenones, thiozanthenes

And promote a fit cool body by wearing temperature appropriate clothing.