The Bartholin glands are located on both sides of the vaginal opening. They secrete fluids that help lubricate the vagina. If the glands are blocked for any reason, a round swelling called a cyst may develop.
The Bartholin gland ducts drain the fluid made by the glands. These ducts may become blocked due to infection or chronic inflammation. When a duct is blocked, the gland fills with fluid. This forms a cyst. The cyst can grow from very small to the size of a golf ball. Occasionally, the cyst itself may become infected, and a pocket of pus, called an abscess, develops.
The main causes of this condition include:
In many cases, the cause is unknown. Several different bacteria may cause a Bartholin abscess.