Sebaceous Cyst Complications

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A sebaceous cyst is a closed sac under the skin filled with a cheese-like or oily material.

See also:

  • Carbuncle
  • Cyst
  • Furuncle

Alternative Names

Epidermal cyst; Keratin cyst; Epidermoid cyst

Causes, incidence, and risk factors

Sebaceous cysts most often arise from swollen hair follicles. Skin trauma can also induce a cyst to form. A sac of cells is created into which a protein called keratin is secreted.

These cysts are...

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