It is usually caused by bacteria entering the skin through a cut or. Webdec 7, 2023 · an abscess, also known as a boil, is a localized infection that affects the skin and underlying tissues. Webjul 17, 2024 · a boil is a contagious skin infection that starts in a hair follicle or oil gland.

At first, the skin turns red in the area of the infection, and a tender lump develops.