You might be severely dehydrated if...

Heat stroke is a very serious concern for everyone this time of year / Ashley Knight

Heat stroke is a very serious concern, especially for those who work outside.

Experts say your body reacts in a different way when it is severely dehydrated and it's important to know the warning signs before it's too late.

"You lose your thirst mechanism and you also lose your ability to sweat and those are key. Other symptoms can be headache, nausea, vomiting, a really high temp," says Health Director Dr. Jacqueline Grant.

When it comes to water, experts say you should drink half your weight in ounces and try to stay in the shade if you have to be outside.

Be sure to also check in with the elderly at least twice a day since they tend to live in older homes which can often have air conditioning problems.

Kay Hines with the SOWEGA Council on Aging says if the temperature inside is above 90 degrees, a fan blowing right on you will only dry out your skin. Instead, have it blow over a pan of water or ice.