Sebaceous cysts are usually harmless, slow-growing lumps beneath the skin, commonly found on the scalp, face, ears, trunk, back, or groin. They are sometimes referred to as epidermal inclusion cysts, but sebaceous cysts is a more accurate term.
Causes of these cysts include:
– A ruptured follicle linked to acne
– Improper growth of a sebaceous duct
– Injury to the area
Occasionally, cysts form without any clear reason and usually contain keratin, lipid, and other skin particles.
Sebaceous cysts can remain stable or grow over time. They may become inflamed or rupture, increasing the risk of infection.
While sebaceous cysts can resolve on their own, they often recur. Most do not cause problems or require treatment, but if a cyst is bothersome, consult a healthcare provider.
Treatment options include steroid injections to reduce inflammation, which may eliminate the need for drainage. Infected cysts may need to be punctured and drained, but large cysts might require surgical removal. If a cyst becomes swollen, tender, large, or infected, treatment may involve antibiotics followed by surgery.