Underarm excessive sweating, also called axillary hyperhidrosis, is an uncontrollable, annoying, embarrassing, and isolating problem (to say the least). From the discomfort of sweat running down your sides, to the embarrassment of obvious sweat stains, to the fear of being “discovered,” uncontrollable underarm sweating can feel like it’s Excessive sweating almost never causes physical harm, but the social and emotional toll on a person can be very serious. The recommended treatment depends on your problem: soaked shirts, smell, or yellow armpit stains. You can reduce all of these to an extent with over-the-counter treatments and changed habits. Bacteria on your skin can turn old sweat into smelly armpits. Shower daily to wash away the sweat before this happens. Apply this just before bed and right after you wake up, or after drying off from your shower. 3. Reduce sweat triggers Many people suffer from hyperhidrosis, or excessive sweating, for genetic or hormonal re...