You can get a pimply underarm rash from being overheated. This type of rash (also called miliaria) occurs when sweat glands and ducts become obstructed by bacteria, skin cells, oil, or other debris.

Most of the time, armpit heat rashes go away once your skin cools down. But you should still see a doctor to be sure. There are different types of armpit heat rash. Some cause tiny, clear blisters ...

An armpit rash is often caused by irritation ... They can help determine the exact type of rash and prescribe any necessary treatments to get you feeling better. Read next ...

Additionally, the skin can chafe easily and the armpit has hair follicles and sweat glands. These factors make the perfect conditions for numerous types of rashes. Armpit rashes can caused by many ...