Polyendocrine metabolic ovarian syndrome (PMOS) — previously called polycystic ovary syndrome (PCOS) — is a hormonal imbalance that occurs when your ovaries (the organ that produces and releases eggs) create excess hormones. If you have PMOS, your ovaries produce unusually high levels of hormones called androgens. This causes your reproductive hormones to become imbalanced. As a result, people with PMOS often have irregular menstrual cycles, missed periods and unpredictable ovulation. It can also cause excess hair growth and acne. Small follicle cysts (fluid-filled sacs with immature eggs) may be visible on your ovaries on ultrasound due to lack of ovulation (anovulation). PMOS is one of the most common causes of female infertility. It can also increase your risk of other health conditions. Your healthcare provider can treat PMOS based on your symptoms and if you wish to become pregnant. People with PMOS may be at higher risk for certain health conditions, like diabetes and high blood pressure. Females can get PMOS any time after puberty. Most people are diagnosed in their 20s or 30s when they’re trying to get pregnant. You may have a higher chance of getting PMOS if you have obesity or if other people in your biological family have PMOS