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  1. Polycystic ovary syndrome (PCOS) - Symptoms and causes

    Polycystic ovary syndrome (PCOS) is a problem with hormones that happens during the reproductive years. If you have PCOS, you may not have periods very often. Or you may have periods that last …

  2. PCOS (Polycystic Ovary Syndrome): Symptoms & Treatment

    Feb 15, 2023 · 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 PCOS, …

  3. Polycystic Ovary Syndrome (PCOS) - Johns Hopkins Medicine

    Polycystic ovary syndrome (PCOS) 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’s eggs. But it can …

  4. Polycystic ovary syndrome - Wikipedia

    Polycystic ovary syndrome (PCOS) is the most common hormonal disorder in women of reproductive age. The name comes from the observation of small follicles (or "cysts") that often appear on the …

  5. Polycystic ovary syndrome - Office on Women's Health

    Oct 24, 2025 · PCOS is one of the most common, but treatable, causes of infertility in women. In women with PCOS, the hormonal imbalance interferes with the growth and release of eggs from the ovaries …

  6. 9 Types of PCOS - Verywell Health

    Dec 13, 2025 · The different types of PCOS are classified based on qualifying symptoms, such as having high levels of androgens (or not). Learn about the phenotypes and subtypes here.

  7. What Is Polycystic Ovary Syndrome (PCOS)? - Northwestern Medicine

    Polycystic ovary syndrome (PCOS) is a disorder that affects 1 in 10 women* of childbearing age. Childbearing age describes people who have gotten a period and haven’t gone through menopause yet.

  8. Polycystic Ovary Syndrome (PCOS) - The Merck Manuals

    Feb 8, 2024 · Polycystic ovary syndrome (PCOS) occurs in 5 to 10% of women (1). In the United States, it is the most common cause of infertility. PCOS is a clinical syndrome that involves ovulatory …

  9. Polycystic Ovary Syndrome (PCOS) - NICHD - Eunice Kennedy ...

    Polycystic ovary syndrome (PCOS) is a set of symptoms—including metabolic, heart/blood, inflammatory, and reproductive—related to a hormone imbalance.

  10. Polycystic ovary syndrome

    Feb 7, 2025 · Polycystic ovary syndrome (PCOS) is a common hormonal condition that affects women of reproductive age. It usually starts during adolescence, but symptoms may fluctuate over time. …