Furuncle is another word for "boils". Boils are bacterial infections of the hair follicle that also involve the surrounding tissue. This can happen on any part of the body. When the follicles become infected, they become swollen. A pimple looks like a red, raised lump on the skin that is centered on a hair follicle. If it bursts, pus comes out. Boils usually appear on the face, neck, thighs and buttocks. A pimple may start out as a benign-looking lump on the skin. However, as the infection progresses, the boil can become hard and painful. Pus forms in a boil as a result of the body's attempt to fight the infection. The pain may be most severe just before the boil bursts and is most likely to improve after it has healed. Boils start small but can grow to more than 2 inches in size. The skin around the infected hair follicle may become red, swollen, and tender. Wounds are also possible. When many boils occur at one place in the body, it is called carbuncle. Carbuncles may cause fever and chills.
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