Polycystic ovary syndrome (PCOS) is a chronic endocrine disorder in women. With PCOS, the ovaries make the follicles, but the eggs do not mature or leave the ovary. The immature follicles can turn into fluid-filled sacs called cysts.

Ovary and Fallopian Tube
Ovarian Cyst
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The cause is not exactly known. Genes may play a role. The problem appears related to insulin resistance that creates high levels of insulin. These high insulin levels cause too much androgen from the ovaries. This prevents ovulation and leads to enlarged, polycystic ovaries. Excess androgen is also associated with:

  • Hirsutism —undesired hair growth on face and body
  • Insulin resistance
  • Acne