Causes of Menstrual Irregularities

Menstrual irregularities can affect any woman at any point during her reproductive life. They can be caused by several factors, such as mental stresses and physical strain. During puberty, it can take as long as two years for a young girl's periods to settle into a pattern. Additionally, women who are going through menopause may experience irregularities as they approach the stop of menstruation completely. However, there are more serious causes of menstrual irregularities that should be addressed by a doctor.

Menstrual Irregularities: Causes

There are many causes of menstrual irregularities, and several of them are natural processes or triggers that cause a hormonal imbalance. However, there are some medical conditions that can cause ongoing menstrual irregularities.

Polycystic ovary syndrome (PCOS)

Polycystic ovary syndrome (PCOS).Women with  polycystic ovary syndrome have small cysts that grow in their ovaries. Women with do not always release an egg, and as a result, do not have a period. PCOS often results in women having light, irregular periods. Furthermore, their hormone levels are often imbalanced, and women may have higher levels of testosterone.

Thyroid disorders

The thyroid controls the body's metabolism hormones, and thyroid disorders are one of the causes of menstrual irregularities. Often, a visit to a doctor is required to diagnose a thyroid disorder.


Stress is one of the most common causes of menstrual irregularities.Stress is one of the more common causes of menstrual irregularities. Women who are suffering from high amounts of anxiety experience an imbalance of hormones. Minimizing stress can help regulate the hormone levels and irregular periods.

Extreme weight loss or gain

Many menstrual irregularities are related to fluctuations in weight. Women who are anorexic, or lose or gain a large amount of weight in a small amount of time, may experience irregularities in their menstrual cycles.  Maintaining a healthy weight with a well-balanced diet and an exercise routine can help regulate weight and the menstrual cycle.


With age, a woman's menstrual cycle can change dramatically, and aging is one of the major causes of menstrual irregularities. Irregular and heavy bleeding can be common when women are perimenopausal. As their bodies prepare for menopause, hormones fluctuate and menstruation decreases.


Although it is extremely rare, cancer can cause menstrual irregularities. Cervical cancer can cause heavy bleeding during sex and disrupt the menstrual cycle.

If your menstrual irregularities persist or worsen, consult a doctor immediately.  Often, the signs and symptoms of menstrual irregularities go away on their own, but some cases may need treatment.  There are many treatments for the different causes of menstrual irregularities that women can turn to. Click here for more information about treating menstrual irregularities.

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