What is cellulitis? How to Treat Cellulitis, Cellulitis is an infection of the skin that is caused by bacteria. Your skin protects you from all kinds of infections that you can receive from a sore, cut, or an insect bit. The bacteria can find its way into the skin where it spreads to deeper tissue. If you do not visit the doctor and receive antibiotics the infection can spread to your blood or to your…

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