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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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MedlinePlus at a Glance

  • Offers information on health topics, human genetics, medical tests, medications, dietary supplements, and healthy recipes.
  • Sourced from more than 1,600 selected organizations.
  • Provides 40,000 links to authoritative health information in English and 18,000 links to information in Spanish.
  • In 2018, 277 million users viewed MedlinePlus more than 700 million times.

Polycystic Ovary Syndrome

Polycystic ovary syndrome (PCOS) happens when a woman's ovaries or adrenal glands produce more male hormones than normal. PCOS causes cysts (fluid-filled sacs) to grow on the ovaries. Symptoms include:

  • Irregular menstrual periods
  • Infertility
  • Pelvic pain
  • Excess hair growth on the face, chest, stomach, or thighs
  • Weight gain
  • Acne or oily skin
  • Patches of thickened skin

Women with PCOS are at higher risk of diabetes, metabolic syndrome, heart disease, and high blood pressure.

PCOS is more common in women who have obesity or have a mother or sister with PCOS. To diagnose PCOS, your health care provider may do a physical exam, pelvic exam, blood tests, and an ultrasound.

There is no cure, but diet, exercise, and medicines can help control the symptoms. Birth control pills help women have normal periods, reduce male hormone levels, and clear acne. Treatments for infertility caused by PCOS may include medicines, surgery, and in vitro fertilization (IVF).

NIH: National Institute of Child Health and Human Development




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