A boil, also known as a furuncle, is a swollen, pus-filled growth on the skin that occurs when bacteria—even those normally found on your body—infect a group of hair follicles. Boils commonly develop ...

If you've ever had a boil, then you know just how unpleasant these pus-filled bumps can be. Once they develop, they often become larger and more painful over time and are equally unpleasant when they ...