Signs of Heat Exhaustion: Know the Difference
On a hot day, almost everyone feels a little wrung out. Sweat. A slow pulse of fatigue. A faint headache that builds through the afternoon. Most of the time that is just the body working hard. Sometimes it is something else — heat exhaustion. The job is to know when ordinary heat fatigue has crossed into a medical condition that needs intervention, and when heat exhaustion itself is about to tip into heat stroke.
This article walks through the signs of heat exhaustion as they actually present, side by side with the things they get confused with.