Medically reviewed by Marla Anderson, MD Key Takeaways A boil on the breast can form when bacteria infect a hair follicle.Do not pop a breast boil because it can spread the infection.Apply warm ...

Boils, also known as furuncles, are painful, red, pus-filled bumps that form on the skin, usually around hair follicles or oil glands. They are typically caused by a bacterial infection, most often by ...