Polyendocrine metabolic ovarian syndrome (PMOS) — formerly known as 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. Effective May 2026, polyendocrine metabolic ovarian syndrome (PMOS) is the new name for the condition formerly known as polycystic ovary syndrome (PCOS). What is polyendocrine metabolic ovarian syndrome (PMOS)? Polyendocrine metabolic ovarian syndrome (PMOS) is a set of symptoms caused by a problem with a woman’s hormones. It affects the ovaries. These are the small organs that store a woman. Polyendocrine metabolic ovarian syndrome (PMOS) is a hormone health issue that starts to show signs in women of childbearing age. Polyendocrine metabolic ovarian syndrome used to be called polycystic ovary syndrome (PCOS). Polycystic ovary syndrome (PCOS) is a common hormonal disorder in which higher than normal androgen levels lead to irregular menstrual periods, abnormal ovulation, infertility, excess facial or body hair and/or acne in women (1). PCOS affects an estimated 10–13% of reproductive-aged women. It is. Health problems linked to PCOS What is Polycystic Ovary Syndrome (PCOS)? PCOS is a common health condition that affects women of all races and ethnicities during their reproductive years. PCOS redirects here. For other uses, see PCOS (disambiguation). Polyendocrine metabolic ovarian syndrome (PMOS), previously called polycystic ovary syndrome (PCOS), [11] is the most common hormonal disorder in women of reproductive age. Polycystic ovary syndrome (PCOS) – now known as polyendocrine metabolic ovarian syndrome (PMOS) -- has a number of symptoms. Many are common issues, so a correct diagnosis may take time. Polycystic ovary syndrome (PCOS) affects all areas of the body, not just the reproductive system. Learn about PCOS symptoms and treatment options. What Is PCOS? Polycystic ovary syndrome (PCOS) — now called polyendocrine metabolic ovarian syndrome (PMOS) — is a hormonal condition that affects your ovaries, the female reproductive organs. PCOS Association provides support, resources, and guidance for managing PCOS.