Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Epidermoid Cyst
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Discusses possible causes of swollen glands and other lumps under the skin. Covers bacterial and viral infections, noncancerous growths, hernias, aneurysms, and swelling caused by cancer. Includes an interactive tool to help you decide when to call a doctor.
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Home treatment for a lump, such as an epidermal (skin) cyst, may relieve symptoms but may not make the cyst go away. An epidermal cyst is a small, round lump in the top layer of skin called the epidermis. It may be filled with a soft, yellow substance called keratin. Epidermal cysts most often appear on the face, ears...