You might think of hot flashes—sudden bursts of heat that radiate from your head, neck, or torso, possibly accompanied by red, blotchy skin, sweating, and a racing heart—as something only women experience around the time their periods stop. But they can be the result of a number of things as your body tries to cool itself down. Not everyone sweats when they do, and you may feel chilly afterward. Here are some of the things that can trigger your hot flashes.