Vaginal bleeding resulting from the process of periodic shedding of the endometrium. The first day of menstrual flow marks the beginning of a new menstrual cycle.
Explore All Resources
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Stopping Estrogen Treatment (Sometimes called “HRT”)
Daily Progesterone therapyEstrogen treatment -
The ABCs of Osteoporosis Prevention for Women in Midlife
Osteoporosis and bone health -
The Estrogen Errors: Why Progesterone Is Better for Women’s Health
Daily Progesterone therapyEstrogen treatment -
A Positive View of Women’s Exercise, Menstrual Cycles and Ovulation
Ovulation and menstrual cycles -
For Healthcare Providers: Managing Menorrhagia Without Surgery
Daily Progesterone therapyHeavy flow -
Perimenopause: The Ovary’s Frustrating Grand Finale
Cramps and painful periodsDaily Progesterone therapy
Glossary
Visit the Glossary to learn more about the specific terms used on this website.
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Menstruation
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Rheumatic fever
An illness caused by a reaction to the germ causing strep throat. It usually involves a fever and sore joints, and often a skin rash and problems with heart valves.
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