|Bacterial infections, or the inflammation of one or more hair follicles, can result in the formation of a boil. They are usually painful and can be quite distressing, especially if they are recurring. A boil generally starts off as an inconspicuous pink and tender bump localized to one area. This soon develops into a firm, hard, inflamed lump that is filled with bacteria-fighting white blood cells and dead skin tissue (pus).
The affected area usually gets larger and more painful until the boil bursts and the pus is able to drain. While some boils disappear within a few days, many can take up to two weeks to heal, which can be very painful and frustrating.