Polycystic ovary syndrome: (PCOS) is an endocrine system disorder where

Polycystic ovary syndrome (PCOS) is an endocrine system disorder where small fluid-filled sacs develop on the ovaries. PCOS affects women in their reproductive years. Learn about PCOS, a hormone problem that affects the ovaries and can cause missed periods, excess hair growth, acne, and infertility. Find out the causes, symptoms, diagnosis, treatment, and complications of PCOS. Polycystic ovary syndrome (PCOS) is a hormonal disorder that affects people with ovaries. PCOS causes hormonal imbalance and metabolism problems; it may lead to infertility. PCOS affects about 1 in 10 adults with ovaries.