Missing menses (amenorrhoea) – Some common causes

Failure to do so means that your period will not be at all for one or more months, and it can happen for a variety of reasons. Missing menses are usually called “amenorrhea” in medical language.

You usually distinguish between irregular and absent menses. When you have an irregular period, it means that the period between menstruation is less than 21 days or more than 35 days. In the absence of menses, the period does not come at all for one or more months. It can be due to a variety of causes, but a pregnancy test can be a good way to rule out that it is not because you have become pregnant. In most cases, absenteeism is due to causes that do not require treatment.

Causes of missing menses

Some causes of missing men are:

  • Pregnancy
  • Stress and worry
  • Weight gain or weight loss
  • Protection against pregnancy
  • Hormonal imbalance
  • change of scenery


One reason for missing menstruation may be that you have become pregnant. In order to become pregnant you must have a sexual intercourse where sperm has entered the genital area. If you suspect you are pregnant, you should do a pregnancy test. Pregnancy tests can be purchased at a pharmacy, but they are also available in many grocery stores and on the internet. You can also do a pregnancy test at a midwife, juvenile reception or medical center.

Stress and worry

Different types of stress and anxiety can upset your period and cause it to fail. This can be about severe stress, for example at school or at work, hard training or an eating disorder. If you suffer from mental disorders such as depression, anxiety or eating disorders, you can seek care at a health care center for help.

Weight gain or weight loss

Both weight gain and weight loss can result in missing menstruation. Being overweight is a risk factor for many health problems and the natural cycle of men can be affected. Losing weight, dieting and other types of heavy weight loss can mean that the period is absent. Excessive exercise can also be something that leads to irregular or absent menses.

Protection against pregnancy

Some protection against pregnancy can make the period disappear. It may also be that some contraceptives lead to missing or irregular menses when using them initially. Then the mens cycle usually adjusts with time. The reason that contraceptives cause imbalances is that they often contain hormones that affect menstruation.

Hormonal imbalance

Hormonal imbalances in the body can lead to missing menstruation. A common underlying cause of hormonal imbalance is PCOS (polycystic ovarian syndrome) disease. At PCOS, you have many ovaries on one or both ovaries and in many cases a lot of testosterone, male sex hormone, in the body. PCOS can occur without causing any trouble and is usually detected when you fail to conceive. Missing or irregular menses are one of the most common symptoms of PCOS.

change of scenery

The body can react when changing environment, such as moving or going on a journey. The environmental change can stress the body, affect hormones and cause the natural menstrual cycle to be disrupted for a period of time.

What can be done when the period is not over?

If you have done a pregnancy test and excluded that you have become pregnant, your missed period is often due to causes that can be arranged on your own. During environmental changes and temporary stress or worry, people usually come back as usual when it has calmed down. It can be good to talk to someone about the stress and worry of getting support and feeling better. If the period has not been due to overweight or severe weight loss, there is help to get from the health care in order to rectify the weight and exclude underlying diseases.

When should you seek care?

If you have any of the following, you should contact a gynecologic clinic or health center:

  • In case of missing men for more than six months (after pregnancy test, not in menopause)
  • For a long stay of more than a year with a period of menstruation, which then comes back (if you are in your fifties)

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