Epidermoid cyst
Epidermoid cyst
An Epidermoid cyst (pronounced: epi-der-moid sist), also known as an epidermal cyst or epidermal inclusion cyst, is a common benign growth that can appear anywhere on the body, but is most commonly found on the face, neck, and trunk.
Etymology
The term "Epidermoid" is derived from the Greek words "epi" meaning "upon", and "derma" meaning "skin". The term "cyst" comes from the Greek word "kystis" meaning "bladder" or "sac".
Definition
An Epidermoid cyst is a closed sac under the skin filled with a cheese-like or oily material, formed by the shedding of the skin into a small pouch (cyst). The cyst may be caused by damage to a hair follicle or sweat gland, although the exact cause is not known.
Symptoms
Epidermoid cysts are usually slow-growing and painless. They can range in size from less than 1/4 inch to 2 inches or more in diameter. The skin over the cyst may be smooth and normal, or may have a small central opening (pore). If the cyst becomes inflamed or infected, it can cause pain, redness, and swelling.
Treatment
Treatment for an Epidermoid cyst may include observation, incision and drainage, or surgical removal. If the cyst is not causing any discomfort, treatment may not be necessary. However, if the cyst becomes inflamed, infected, or is causing cosmetic concerns, it may need to be treated.
Related Terms
- Dermatology: The branch of medicine dealing with the skin and its diseases.
- Sebaceous cyst: A small, noncancerous bump under the skin, similar to an Epidermoid cyst but formed by the blockage of sebaceous glands.
- Folliculitis: Inflammation or infection of one or more hair follicles.
- Abscess: A collection of pus that has built up within the tissue of the body.
External links
- Medical encyclopedia article on Epidermoid cyst
- Wikipedia's article - Epidermoid cyst
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