A Bartholin's cyst is a fluid-filled sac within the Bartholin's gland of the vagina. Bartholin's cysts typically occur in nulliparous women of child-bearing age and other risk factors include a personal history of Bartholin's cyst, being sexually active, or a history of vulval surgery. Bartholin's cysts can cause vulvar pain, dyspareunia, and may rupture spontaneously, relieving pain. Treatment options include incision and drainage with placement of a Word catheter or marsupialization to prevent reaccumulation of fluid.