Absent menstruation, or amenorrhea, is the absence of menstrual bleeding. It happens when a girl hasn’t had her first menstrual period by age 16. It also occurs then a woman fails to menstruate for 3 to 6 months. There are two types of absent menstruation. The type depends on whether menstruation hasn’t occurred by a certain age, or whether menstruation has occurred and is then absent. Absent menstruation may occur for a variety of reasons. The most common of these include natural causes, lifestyle factors, and hormonal imbalances. It’s important to see a doctor about absent menstruation, as the underlying cause may require treatment. Absent menstruation often resolves once the cause is treated. Amenorrhea can happen for many reasons. The most common cause is pregnancy. However, amenorrhea may also be caused by various lifestyle factors, including body weight and exercise levels. In some cases, hormonal imbalances or problems with the reproductive organs might be the cause.
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Women's Health and Complications 