Epidermoid cysts are lined by skin cells that form a scale that accumulates in the cyst and appears as a creamy substance. This image displays a large, infected cyst, which is draining some pus. This image displays a large, tense cyst at the temple. This image displays a cyst that has opened to the surface over time, turning a dark brown and appearing as a "plug" through the opening.
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Epidermoid Cyst:
Information for adults

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Picture of Epidermoid Cyst: Epidermoid cysts are lined by skin cells that form a scale that accumulates in the cyst and appears as a creamy substance. Divider line
Epidermoid cysts are lined by skin cells that form a scale that accumulates in the cyst and appears as a creamy substance.
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Signs and Symptoms
Epidermoid cysts can be located almost anywhere but are most common on the face, neck, scalp, or trunk.
  • A cyst appears as a dome-shaped, skin-colored growth that usually moves when touched and pressed upon. It may have a small opening in the center.
  • The cyst can be well-defined or irregular due to prior rupture, scarring, and regrowth. 
  • If manipulated or infected, the cyst can become red and may be tender.
Last Modified: 29 Jan 2008

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