A skin abscess is a collection of pus under the skin, which is usually caused by a bacterial infection. A skin abscess typically appears as a smooth, firm swelling that may be tender or painful.
The swelling and the immediate surrounding area may be warm and inflamed, and there may be a visible accumulation of pus under the swelling. In some cases, there may also be a fever and chills.
A small skin abscess may not require treatment and will disappear by itself.
A large or persistent skin abscess will probably need to be drained by a doctor, who may also prescribe antibiotics to clear up the infection

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