Why Does a Bartholin Cyst Cause Pain With Sitting or Sex?

A Bartholin cyst can cause discomfort during daily activities primarily because of where it is located. The Bartholin glands sit just inside the lower part of the vaginal opening, near the base of the inner lips (the labia minora) ^{[1] [2]}. When the duct of one of these glands becomes blocked, fluid builds up and creates a cyst ^[1]. Because this area of the outer genitals (the vulva) is naturally subjected to friction and weight-bearing, everyday movements can aggravate pressure and tenderness in the swollen tissue.

The Role of Location and Movement

Because of its location, an enlarged cyst is vulnerable to physical pressure and stretching.

• Sitting and Walking: When you sit down or walk, the weight of your body and the movement of your legs can squeeze the enlarged area, causing a throbbing sensation or a feeling of constant pressure ^{[1] [2]}.
• Having Sex: Penetrative intercourse or vulvar contact involves friction and stretching of the sensitive tissues around the vaginal opening. Stretching a tense, swollen cyst can cause significant pain ^{[3] [4]}. Appropriate medical treatment, such as a minor drainage procedure, often reduces this pain, though some discomfort may persist while you heal ^[5]. You should follow your clinician’s advice on when it is safe to resume sexual activity.
• Urinating: A Bartholin cyst does not typically cause internal burning when you urinate. However, if urine touches the raw or inflamed skin on the outside of the cyst, it can sting. Internal burning, frequent urges to go, or pain deep inside often point to a different issue, such as a urinary tract infection (UTI) or a sexually transmitted infection (STI), which requires its own medical evaluation. While a very large cyst can occasionally interfere with the urinary stream, a true blockage of urine is uncommon ^{[2] [6]}.

Uninfected Cyst vs. Infected Abscess

Not all Bartholin cysts hurt. An uninfected cyst is often a painless lump or causes only a mild sensation of heaviness ^[7].

However, a blocked duct can become infected, developing into a Bartholin abscess (a confined pocket of pus) ^{[1] [8]}. An abscess is not automatically an STI; while STIs can coexist, common gut bacteria like E. coli are frequently the cause, and the exact source of the bacteria is not always known ^{[9] [10]}.

When a cyst becomes an abscess, the tissue becomes inflamed, heavily swollen, and very tender ^{[8] [11]}. This inflammatory response means that even the slightest touch, movement, or pressure can cause sharp, intense pain ^[12].

What You Can Do While Waiting for Care

If you are waiting to see a doctor, there are a few safe steps you can take to manage the discomfort:

• Warm sitz baths and over-the-counter pain relievers (like ibuprofen or acetaminophen) may help temporarily ease the pressure, provided they are medically safe for you to use ^{[13] [5]}.
• Wear loose clothing to reduce friction.
• Do NOT try to squeeze, pop, or drain the lump yourself. Proper medical procedures—such as a small balloon catheter (Word catheter) or a minor surgery called marsupialization—are needed to safely treat an abscess and help prevent it from returning ^{[1] [14]}.

Recognizing Red Flags: When to Seek Immediate Care

Certain symptoms suggest a spreading infection, a more severe complication, or a different diagnosis that requires prompt medical evaluation:

• Same-Day Medical Assessment: If you develop a fever, chills, or rapidly worsening redness and swelling, this could mean the infection is spreading into the surrounding skin and soft tissue, a condition known as cellulitis ^[15].
• Emergency Care: Go to the nearest emergency room if you are entirely unable to urinate ^[6], feel faint, confused, or seriously unwell, or if your pain is rapidly spreading backward toward the anus (the perineum) ^[12].
• Age 40 or Older: If you are 40 or older, or if you have gone through menopause, you should have any new lump in this area evaluated promptly by a clinician. In rare cases, what appears to be a cyst could be a Bartholin gland tumor, a type of cancer that can look very similar. A doctor may recommend a biopsy (taking a small tissue sample) to rule this out ^{[16] [17] [18]}. You should also be re-evaluated if a lump is unusually hard, persistent, or keeps coming back.

What to Expect After Treatment

If you have a procedure to drain the fluid, it is expected to feel some soreness for the first few days, but the pain should begin steadily improving ^{[5] [19]}. Contact your treating clinician promptly if your pain gets worse instead of better, or if you develop a new fever, spreading redness, foul-smelling drainage, or new difficulty urinating.