Linda Patterson, extension health specialist at Mississippi State University, said the high temperatures and humidity stress the body's ability to cool itself, making heat illness a special concern. Be alert at these levels or any combinations of high heat and humidity. Heat stress may overcome the body's ability to regulate internal body temperature at a safe level and cause heat stroke. Signs of heat stroke include nausea, weakness, fainting, pale clammy skin and profuse perspiration.
Heat stroke is a life-threatening situation.
There are no benefits to gain by working, playing, gardening or exercising to exhaustion. Young children, older adults and those with cardiovascular disease often are more at risk for heat stress. To help prevent heat illness or stroke, drink a lot of liquids even before you get thirsty. Make sure to get enough vitamins and minerals each day, especially potassium, and avoid alcohol and caffeinated beverages. Take a break if you feel overheated or a headache coming on.