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Cellulitis (cont.)

Cellulitis Causes

A number of factors can increase the chance that bacteria may invade the skin and cause infection. These risk factors include the following:

  • Injuries that break the skin
  • Infections related to a surgical procedure
  • Any breaks in the skin that allow bacteria to invade the skin (examples are chronic skin conditions such as eczema or psoriasis)
  • Foreign objects in the skin
  • Infection of bone underneath the skin (An example is a long-standing open wound that is deep enough to expose the bone to bacteria. Sometimes this occurs in people with diabetes who have lost sensation in their feet.)
  • Bacteria that typically cause cellulitis include group A streptococcus and Staphylococcus aureus (also known as staph infection). Some S. aureus infections are resistant to antibiotics (for example, methicillin-resistant Staphylococcus aureus or MRSA) or prone to causing abscess or collections of pus in the skin.
Medically Reviewed by a Doctor on 6/21/2013

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Cellulitis is a term that describes the inflammatory response caused by bacteria in the skin below the epidermis.

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