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(Epidermoid Cyst; Epidermal Inclusion Cyst; Epithelial Cyst; Keratin Cyst)
- Blockage of a hair follicle by skin cells—When an injury to the skin occurs, cells from the surface may block hair follicles located deeper within the skin.
- Damage to a hair follicle due to acne
- Blockage or defect of the sebaceous gland—This gland is near the hair follicle. It secretes oily material used to lubricate the skin and hair.
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- Small, dome-shaped lump beneath the skin
- Foul-smelling, cheese-like material draining from the cyst
- Redness or tenderness on or around the cyst if it becomes inflamed
- Surgical excision—The doctor removes the entire cyst, including its contents and cyst wall.
- Surgical drainage—This involves cutting open the cyst, and draining the contents. The cyst might come back, though.
- Antibiotics—These may be prescribed if the cyst has become in infected.
American Academy of Dermatology http://www.aad.org
Family Doctor–American Academy of Family Physicians http://familydoctor.org
Canadian Dermatology Association http://www.dermatology.ca
Health Canada http://www.hc-sc.gc.ca
Cysts. DermNet NZ website. Available at: http://dermnetnz.org/lesions/cysts.html. Updated May 23, 2014. Accessed September 23, 2014.
Cysts–epidermoid and pilar. The British Association of Dermatologists website. Available at: http://www.bad.org.uk/for-the-public/patient-information-leaflets/cysts---epidermoid-and-pilar?q=Cysts - epidermoid and pilar. Accessed September 23, 2014.
Zuber TJ. Minimal excision technique for epidermal (sebaceous) cysts. American Family Physician. 2002;65:1409-1412.
- Reviewer: Brian Randall, MD
- Review Date: 08/2014
- Update Date: 09/23/2014