A labial cyst is a fluid-filled sac that develops on or near the labia, the folds of skin surrounding the vaginal opening. These cysts are common, affecting roughly 3% of adult women, and most are benign. They can range from pea-sized and barely noticeable to as large as an orange, and many are discovered only during a routine pelvic exam. While some cause no symptoms at all, others can become painful, especially if they grow large or get infected.
Types of Labial Cysts
Not all labial cysts are the same. The type depends on which structure in the vulvar tissue is involved.
Bartholin gland cysts are the most well-known. The Bartholin glands sit near the lower part of the vaginal opening, roughly at the 4 o’clock and 8 o’clock positions, and secrete moisture through small ducts about 2 to 2.5 cm long. When one of these ducts gets blocked, mucus backs up and forms a cyst. These cysts show up as a soft, palpable lump on one side of the vaginal opening.
Epidermal inclusion cysts are firm, round, yellow-white bumps most commonly found on the outer lips (labia majora). They form when skin cells get trapped beneath the surface and produce a protein called keratin, which fills the cyst with thick, cheese-like debris. They can range from a few millimeters to several centimeters and sometimes appear in clusters.
Skene duct cysts develop near the urethral opening, where small glands can become blocked. These are less common and typically present as a small swelling near the urethra, occasionally with drainage.
Sebaceous cysts form when oil-producing glands in the vulvar skin become blocked, creating a lump filled with yellow-white, greasy material. These look and behave similarly to sebaceous cysts found elsewhere on the body.
What Causes Them
The underlying cause for most labial cysts is some form of blockage. For Bartholin gland cysts specifically, obstruction can follow trauma to the area, childbirth, or an episiotomy, though in many cases no clear cause is ever identified. One theory is that friction during sexual intercourse contributes to ductal obstruction. Once the duct is blocked, glandular secretions continue to build up with nowhere to go, and the duct gradually expands into a cyst.
Epidermal inclusion cysts often trace back to minor skin trauma or surgical scars that trap skin cells beneath the surface. Sebaceous cysts develop simply from clogged oil glands, much like they would on your face or back.
Symptoms and What They Feel Like
Small labial cysts often cause no symptoms. You might feel a soft or firm bump during bathing or wiping but experience no pain. Many women live with them for years without realizing they’re there.
Larger cysts are harder to ignore. They can cause discomfort during sex, walking, sitting, or inserting a tampon. Some look like a large pimple under the skin, while others appear filled with fluid or pus. When a cyst becomes infected and progresses to an abscess, the area turns red, swollen, and tender. You may also develop a fever. Abscesses in the Bartholin gland area typically present as a painful mass surrounded by redness and swelling in the lower part of the vulva.
Home Care With Sitz Baths
For a small cyst that is mildly uncomfortable or showing early signs of infection, warm soaking is the first-line approach. Sit in 3 to 4 inches of warm water for 15 to 20 minutes, three times a day. This keeps the area clean, eases discomfort, and can sometimes encourage a small infected cyst to rupture and drain on its own. Doing this consistently for three to four days is often enough to resolve a minor cyst. If you can’t take a bath, a warm, clean washcloth pressed against the area can help with healing and pain.
Medical Treatment Options
When a cyst is too large, too painful, or keeps coming back, a medical procedure may be needed. The two most common approaches are the Word catheter and marsupialization.
A Word catheter is a small silicone device, about 5.5 cm long, with a tiny balloon at the tip. After numbing the area with local anesthetic, your doctor makes a small incision, drains the cyst, and inserts the catheter. The balloon is inflated with a small amount of saline to hold it in place, and the catheter stays in for about four to six weeks. During this time, the body forms a new permanent drainage channel so fluid doesn’t build up again. This is typically done as a same-day procedure with no hospital stay.
Marsupialization involves a slightly larger incision (1.5 to 3 cm), after which the edges of the cyst wall are stitched open to the surrounding skin. This creates a permanent opening that allows the gland to drain normally. It requires local, regional, or general anesthesia and is more involved than a catheter placement, but it’s still a relatively minor procedure.
Complete surgical excision, where the entire gland is removed, is reserved for recurring cases or when there’s concern about an abnormal growth.
Recurrence After Treatment
One frustrating reality of labial cysts is that they can come back. In one study of 155 patients, about 40% of those treated with simple incision and drainage had a recurrence. Marsupialization performed somewhat better, with a recurrence rate around 32%. A technique using silver nitrate after incision showed the lowest recurrence rate at roughly 9%.
For cysts that return after a first treatment, marsupialization or the silver nitrate approach resolved the problem in over 90% of cases, while repeating a simple incision and drainage worked only about 30% of the time. If you’ve already had a cyst drained once and it comes back, your doctor will likely recommend one of the more durable options.
Recovery After a Procedure
Full recovery from a cyst procedure generally takes two to four weeks. During that time, sitz baths (15 to 20 minutes, three times a day) help the area heal and manage discomfort. Walking is encouraged, starting gently and gradually increasing each day. You’ll need to ask your doctor when it’s safe to drive, have sex, or return to more strenuous activities, since anesthesia and pain medication can affect your readiness.
When a Lump Needs Closer Evaluation
The vast majority of labial cysts are harmless, but not every lump in the vulvar area is a simple cyst. Cancers of the Bartholin gland are rare but do occur. The key red flags include a mass that feels fixed rather than movable, is non-tender, or develops in a woman over 40, particularly after menopause. Benign Bartholin gland problems are uncommon in older women, so a new lump in that age group warrants more thorough evaluation. Other concerning signs include unexplained bleeding, a burning sensation, or a mass that grows steadily rather than fluctuating in size. For women over 40 with a vulvar mass in the Bartholin gland area, many specialists recommend excision and tissue analysis to rule out malignancy.