Normal Range of Menstrual Interval and Flow
Generally, a menstrual interval of 21 ~ 35 days is considered normal.
Usually, menstruation lasts for 2 to 7 days and the menstrual flow is 20 to 80 mL per day. If one’s period is past the normal range, “menstrual disorder (irregular menstruation)” is diagnosed.
Following a girl’s first period, she can experience irregular menstruation for one to two years until her hormone balance becomes stable. Even in adults, menstrual cycle and flow may differ from what it used to be once or twice.
If irregular periods last for more than three months, visit the hospital right away and get tested.
What Causes Irregular Menstruation?
If an adult woman is experiencing irregular menstruation, it is highly likely to be caused by extreme stress or diet, lack of sleep or unhealthy lifestyle.
Irregular periods, however, can also be caused by a disorder in the uterus or in the ovaries. The most common disorder is Polycystic Ovary Syndrome (PCOS).
If the number of days in between periods is more than 35~40 days or there is no period for more than 2~3 months AND you are experiencing skin problems (acne) and hair loss, visit the hospital right away. Irregular cycle can expose one with female sex hormones in high density, increasing the risk for complications, such as endometriosis.
Irregular Periods May Lead to Infertility
Not having a regular menstrual cycle does not necessarily mean something is wrong with your health.
If you are having less than seven menstrual cycles a year, however, the irregular periods can be caused by a disorder. Ovulation tests, ultrasounds, hormone tests and more can help find the structural and functional cause of having an irregular menstruation.
As irregular periods can be a sign for an ovulation disorder, it is recommended that one visits a gynecologist.