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Menstruation

Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus. It passes out of the body through the vagina.

Periods usually start between age 11 and 14 and continue until menopause at about age 51. They usually last from three to five days. Besides bleeding from the vagina, you may have:

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Results 1 - 10 of 544 for Menses
  1. Menstruation (National Library of Medicine)  
    Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every ...
  2. About Menstruation From the National Institutes of Health (Eunice Kennedy Shriver National Institute of Child Health and Human Development)  
    Menstruation/Start Here ... Menstruation ... Eunice Kennedy Shriver National Institute of Child Health and Human Development ... From the National Institutes of Health
  3. ... a few days during each menstrual cycle. Painful menstruation is the leading cause of lost time from ... pain. Your pain occurs at times other than menstruation, begins more than 5 days before your period, ...
  4. ... progesterone (Crinone) is also used to bring on menstruation (period) in women experiencing (absence of menstruation in women of childbearing age who have had ...
  5. ... systemic disease, treatment of the disease may allow menstruation to begin. If the cause is the bulimia , ...
  6. ... to your doctor. Your record should include: When menstruation begins and ends How much flow you have ( ...
  7. ... sign of malfunction or disease. In primary amenorrhea, menstruation does not begin when expected (by the age ...
  8. ClinicalTrials.gov: Menstruation Disturbances From the National Institutes of Health (National Institutes of Health)  
    Menstruation/Clinical Trials ... Menstruation
  9. Absence of a woman's monthly menstrual period is called amenorrhea. Secondary amenorrhea is when a woman who has been having normal ...
  10. Puberty is when your body changes and you develop from being a girl to a woman. Learn what changes to expect so that you feel more ...
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