So what is a functional ovarian cyst? Do we not technically get a cyst during a cycle? Well there is a difference between an ovarian cyst and a functional ovarian cyst.
Better known as a follicle, an ovarian cyst is a fluid-filled sac that contains a maturing egg. It forms on the ovary’s surface. Once it releases an egg, it disappears not long after.
In the event that a mature egg is not released or if the sac reseals after releasing the egg, the sac can swell up with fluid, forming a functional ovarian cyst.
The majority of functional ovarian cysts do not cause symptoms and will go away by themselves. However, they do sometimes rupture, twist, or bleed, which can cause severe pelvic pain.