Water on the knee, or knee effusion, refers to the buildup of fluid in and around the knee joint. This condition leads to a painful, swollen knee and can be caused by various factors, including ...

Colino is a contributor for TIME. Colino is a contributor for TIME. Ovarian cysts, which are small fluid-filled sacs that develop in or on the ovaries, are very common and are usually harmless. In ...

If you have an ovarian cyst and suddenly feel a sharp or intense pain in your lower belly, you might wonder if the cyst has ruptured (broken open). A ruptured ovarian cyst can cause a range of ...