Absence of period

What Are the Causes of Irregular Periods

Mary Smith
By Mary Smith. Updated: January 16, 2017
What Are the Causes of Irregular Periods
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Few women have a regular menstrual cycle of 28 days, it usually swings between 21 and 35. However, when the menstrual cycle is below or above this range it is considered that the period is irregular and it is therefore important to visit the gynaecologist to discuss the case and find out what these changes are due. For more details, in this OneHowTo article we tell you what the causes of irregular menstruation are and what factors must be taken into account at all times.

You may also be interested in: Why Is my Period Early
Steps to follow:

First, we know that menstruation is defined as irregular when any of the following cases apply:

- The intervals between periods vary greatly from cycle to cycle.

- When the cycles are too short, that is, when menstruation occurs at intervals of 21 days or less. This alteration is known as polymenorrhea.

- Menstrual periods are too long, that is, when menstruation occurs at intervals over 35 days, which is known as oligomenorrhea.

- Prolonged absence of periods (amenorrhea) and its cause is not pregnancy.

If you have any of these menstrual disorders, visit to your gynaecologist for a check-up. So you can know what might be the causes of irregular menstruation.

What Are the Causes of Irregular Periods - Step 1

One of the most common causes of irregular menstrual periods is related to stress, anxiety or emotional problems. Excess physical or emotional stress can influence menstruation, causing irregular cycles and even their temporary absence.


Eating disorders such as anorexia, bulimia or anyone who carries a disproportionate loss or weight gain and hormonal disorder can cause irregular menstruation and even lead to the disappearance of the period.


Irregular menstruation, in some cases it may be one symptom of an ovulation disorder. The most common is called Polycystic ovary syndrome. It is a hormonal disorder that produces the appearance of ovarian cysts and also of irregular menstrual cycles or absent periods, it also manifests itslef through symptoms such as increased body hair, decreased breast size, enlarged clitoris, skin changes, etc.

What Are the Causes of Irregular Periods - Step 4
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When variations or hormonal imbalances are produced, for example, stages such as adolescence or pre-menopause periods present menstrual period irregularities.


Also, other health problems such as Diabetes or those related to the malfunction of the thyroid can cause the onset of irregular periods.


If you want to have more information or have questions about late or early menstruation, see our article Why is my period late and why is my period early.

If you want to read similar articles to What Are the Causes of Irregular Periods, we recommend you visit our Sentimental relationships category.

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What Are the Causes of Irregular Periods