"There is nothing that involves only going without returning.

It is the nature of Heaven and Earth

When there is going, there also must be returning."

"To maintain the center of the circle is to respond inexhaustibly."

 

Heatstroke

Heatstroke is similar to heat cramps and heat exhaustion. It's one of the heat-related problems that often result from heavy work in hot environments, usually accompanied by inadequate fluid intake. Older adults, people who are obese and people born with an impaired ability to sweat are at high risk of heatstroke. Other risk factors include dehydration, alcohol use, cardiovascular disease and certain medications.

What makes this syndrome much more severe and potentially life-threatening is the fact that the body's normal mechanisms for dealing with heat stress, such as sweating and temperature control, are lost. The main sign of heatstroke is a markedly elevated body temperature — generally greater than 104 F — with changes in mental status ranging from personality changes to confusion and coma. Skin may be hot and dry, although in heatstroke caused by exertion, the skin is usually moist.

Other signs and symptoms may include:

bulletRapid heartbeat
bulletRapid and shallow breathing
bulletElevated or lowered blood pressure
bulletCessation of sweating
bulletIrritability, confusion or unconsciousness
bulletFainting, which may be the first sign in older adults

If you suspect heatstroke:

bulletMove the person out of the sun and into a shady or air-conditioned space.
bulletDial 911 or call for emergency medical assistance.
bulletCool the person by covering him or her with damp sheets or by spraying with cool water. Direct air onto the person with a fan or newspaper.

 

By Mayo Clinic staff