Overview
A skin (epidermal) cyst is a small, round lump in the top layer of skin called the epidermis. These cysts can form when a hair follicle or oil gland becomes blocked. They may form on the face, neck, back, chest, or genitals. But they can form anywhere on the body.
These cysts usually don't cause problems. They may not need treatment. They tend not to hurt, but they can sometimes become swollen and painful. They also may break open.
If a cyst is swollen and hurts, the doctor may inject it with a medicine or treat it with antibiotics if it's infected. But sometimes a painful or infected cyst will need to be drained or removed. In those cases, the doctor will use numbing medicine before the procedure.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and contact your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
How can you care for yourself at home?
If the cyst was not opened
- Don't squeeze the cyst or poke it with a needle to open it. This can cause swelling, redness, and infection.
- Keep the area clean with soap and water.
After the cyst is opened
- If your doctor told you how to care for your wound, follow your doctor's instructions. If you did not get instructions, follow this general advice:
- Wash the area with clean water 2 times a day. Don't use hydrogen peroxide or alcohol. They can slow healing.
- You may cover the area with a thin layer of petroleum jelly, such as Vaseline, and a nonstick bandage.
- Apply more petroleum jelly and replace the bandage as needed.
- Avoid using an antibiotic ointment unless your doctor recommends it.
- If you had stitches, you may get other instructions. You will have to come back to have the stitches removed.
When should you call for help?
Contact your doctor now or seek immediate medical care if:
- You have symptoms of infection, such as:
- Increased pain, swelling, warmth, or redness.
- Red streaks leading from the area.
- Pus draining from the area.
- A fever.
Watch closely for changes in your health, and be sure to contact your doctor if:
- The cyst is growing or changing.
- You do not get better as expected.
Where can you learn more?
Go to http://www.healthwise.net/patientEd
Enter S615 in the search box to learn more about "Skin Cyst: Care Instructions".
Current as of: February 27, 2026
Author: Ignite Healthwise, LLC Staff
Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

