What are sebaceous cysts?
Sebaceous cysts are typically harmless, slow-growing bumps under the skin. They often
appear on the scalp, face, ears, trunk, back, or groin area. They are sometimes called
epidermal inclusion cysts. But it’s more accurate to call them sebaceous cysts.
These cysts can occur because of:
Sometimes they happen for no clear reason. The cysts usually contain keratin, lipid, and
other skin particles.
Cysts can remain stable or they may steadily grow. Sometimes they will become inflamed
or suddenly break open (rupture). This poses a risk for infection.
Treatment for sebaceous cysts
Sebaceous cysts may resolve on their own. But they often come back. Most cysts don’t
cause problems or need treatment. But if a cyst is bothering you for any reason, see
your healthcare provider.
A cyst can be injected with steroids. This can reduce inflammation and the cyst may
not need to be drained. But infected cysts may need to be cut and drained. To do this,
your provider makes a hole in (punctures) the top and removes the contents. Large
cysts can come back after this procedure and may have to be surgically removed (excised).
If a cyst becomes swollen, tender, large, or infected, treatment may include antibiotics
and then surgery.