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Cellulitis is a bacterial skin infection that often appears as a swollen, red area on the skin's surface. It can cause warmth and tenderness in the affected area. While it is generally not considered life-threatening, understanding its characteristics can be helpful for general awareness.

Infectious Diseases
  • What exactly is cellulitis?
    MedlinePlusMay 2026

    Cellulitis is an infection of your skin and the deeper tissues underneath it, usually caused by strep bacteria. The bacteria get into your body through a cut, burn, bruise, or other wound in your skin.

  • How does the infection start in my skin?
    MedlinePlusMay 2026

    Bacteria enter your skin when you have an injury like a cut, burn, bruise, or surgical wound. Once inside, the bacteria multiply and cause an infection in your skin and the tissues below it.

  • Can I get cellulitis from a small cut or bug bite?
    MedlinePlusMay 2026

    Yes, cellulitis can start from a small cut or bug bite if bacteria get into the wound. Any break in your skin can be an entry point for the infection.

  • Why do some people get it more often than others?
    MedlinePlusMay 2026

    Some people get cellulitis more often if they have weak immune systems, poor circulation, or conditions like diabetes that make infections more likely. People who get frequent cuts or injuries are also at higher risk.

  • Is cellulitis contagious to other family members?
    MedlinePlusMay 2026

    Cellulitis is not contagious like a cold or flu, so you won't spread it to family members just by being around them. However, the bacteria can spread if an open wound touches someone else's open wound.