Bartholin glands are located on either side of the entrance to the vagina. A cyst is a pocket of fluid in the tissue around these glands. If the cyst becomes infected, it is called a bartholin gland abscess.

Bartholin glands make fluid that lubricates the vagina. If the glands become blocked, the fluid can back up and create a cyst. Sometimes, bacteria or viruses can develop in this fluid and lead to an infection.