When someone is experiencing heat exhaustion they may have muscle or abdominal cramps, Vomiting, Diarrhea, Nausea, Fatigue, Headaches, Fainting, Confusion and Dizziness.
A persons urine will usually be dark in color when they're experiencing heat exhaustion and dark colored urine is a sure sign that the person is dehydrated.
Heat exhaustion is a heat related illness that is an emergency and can lead to heat stroke if not treated.
If you or someone are experiencing heat exhaustion you should seek medical attention by getting to the emergency room or contacting 911 as it can be serious.