Medically reviewed by Brian T. Luong, DMD Key Takeaways A gum boil is a painful, swollen bump filled with pus on your ...

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 ...

We've all been there: you're going about your daily routine when suddenly, there's an angry red bump looking at you in the mirror. It's red, it's painful, and it may have a white tip in the center.