Polycystic ovary syndrome (PCOS) is a condition in which a woman's ovaries and, in some cases the adrenal glands, produce more androgens (a type of hormone) than normal. High levels of these hormones interfere with the development and release of eggs as part of ovulation. As a result, fluid-filled sacs or cysts can develop on the ovaries.
Because women with PCOS do not release eggs during ovulation, PCOS is the most common cause of female infertility.
Sources
National Institute of Child Health and Human Development
