Skip navigation
MedlinePlus Trusted Health Information for YouU.S. National Library of MedicineNational Institutes of Health
Contact UsFAQsSite MapAbout MedlinePlus
HomeespañolHealth TopicsDrugs & SupplementsMedical EncyclopediaDictionaryNewsDirectoriesOther Resources
Collections
Clusters

Menstruation, or period, is a woman's monthly bleeding. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus, or womb. It passes out of the body through the vagina. Periods usually start around age 12 and continue until menopause, at about age 51. Most periods last from three to five days.

You should consult your health care provider if (Read more)

Illustration of a female symbol
Results 1-10 of 398 for amenorrhea
  1. Menstruation (National Library of Medicine)
    Menstruation, or period, is a woman's monthly bleeding. Every month, your body prepares for pregnancy. If ...
    www.nlm.nih.gov/medlineplus/menstruation.html - Health Topics
  2. Amenorrhea - primary
    Primary amenorrhea; No periods; Absent periods; Absent menses ... with an average around 12 years old. Primary amenorrhea is not considered to have occurred until a ...
    www.nlm.nih.gov/medlineplus/ency/article/001218.htm - Medical Encyclopedia
  3. Secondary amenorrhea
    Amenorrhea - secondary ... ovarian syndrome is a frequent cause of secondary amenorrhea. You are also more likely to have secondary amenorrhea if you engage in extreme and prolonged exercise, ...
    www.nlm.nih.gov/medlineplus/ency/article/001219.htm - Medical Encyclopedia
  4. Menstruation - absent
    Missed periods; Lack of menses; Periods - missed; Amenorrhea ... having a late period. The rate of primary amenorrhea in the United States is less than 1%. ...
    www.nlm.nih.gov/medlineplus/ency/article/003149.htm - Medical Encyclopedia
  5. Absence of menstruation (amenorrhea) (image)
    Amenorrhea is the lack of menstrual flow and can be a normal occurrence or a sign of malfunction or disease. In primary amenorrhea, menstruation does not begin when expected (by the ...
    www.nlm.nih.gov/medlineplus/ency/imagepages/17088.htm - Medical Encyclopedia
  6. Menstruation and the Menstrual Cycle (National Women's Health Information Center)
    ... Questions E-mail this page to a friend Menstruation and the Menstrual Cycle Home > Frequently Asked Questions > ... More Information See also... Premenstrual Syndrome What is menstruation? Menstruation is a woman's monthly bleeding, also ...
    womenshealth.gov/faq/menstruation.cfm - External Health Links
  7. Menstruation: Preparing Your Preteen for Her Period (Mayo Foundation for Medical Education and Research)
    Menstruation: Preparing your preteen for her period Talking about menstruation can be embarrassing for both you and your ... a few years earlier. That's why explaining menstruation early is so important. But menstruation is an ...
    www.mayoclinic.com/print/menstruation/FL00040/METHOD=print - External Health Links
  8. Talking to Your Child about Menstruation (Nemours Foundation)
    ... good understanding of how the process works. About Menstruation In the early 1900s, girls generally reached menarche ( ...
    kidshealth.org/.../talk/talk_about_menstruation.html - External Health Links
  9. Menstruation (American College of Obstetricians and Gynecologists)
    ... for periods to become regular. Common Questions About Menstruation Will everyone be able to tell when I ... may want to do an exam or tests.. Amenorrhea. Some girls do not menstruate during their teenage ...
    www.acog.org/publications/patient_education/bp049.cfm - External Health Links
  10. Lactational Amenorrhea FAQ (Family Health International)
    Lactational Amenorrhea FAQ Read this page in: Español | Français See Also: Breastfeeding as a Contraceptive Method What is the lactational amenorrhea method (LAM) of family planning? LAM is a ...
    www.fhi.org/en/RH/FAQs/lam_faq.htm - External Health Links
previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next