The length of time between each period is similar. Irregular menstruation is when the length of the cycle is more than 35 days, or if the duration varies this is known as irregular menstruation. A period, or menstruation, is the part of the menstrual cycle in which the endometrium, which is the lining of the uterus, is shed. The main symptom of irregular menstruation is when the cycle is longer than 35 days, or if it varies in length.
A normal menstrual cycle lasts 28 days, plus or minus seven days. Menstrual bleeding is considered irregular if it occurs more frequently than every 21 days or lasts longer than 8 days. Missed, early, or late periods are also considered signs of an irregular cycle.
Reason of irregular periods
- Polycystic ovary syndrome (PCOS) This metabolic and hormonal disorder occurs when the ovaries or adrenal glands overproduce the “male” hormones (androgens) and the body has insulin resistance. In a polycystic ovary, there are many follicles but they do not mature and an egg is not released. Because eggs are not released, progesterone levels are too low and androgen and estrogen levels are too high. This may cause irregular periods and other symptoms of PCOS.
- Thyroid or pituitary disorders Hypothyroidism or hyperthyroidism affect menstrual regularity.
- Pelvic inflammatory disease (PID) An inflammation of the female reproductive system, PID is usually caused by sexually transmitted infections.
- Perimenopause Perimenopause can make your once-regular periods suddenly irregular. Before perimenopause, your estrogen and progesterone levels rise and fall in a consistent pattern during your menstrual cycle. When you're in perimenopause, hormone changes become more erratic. This can lead to unpredictable bleeding patterns.
- Stress and anxiety Chronic stress or even short-term anxiety about a specific problem can interfere with your hormone balance, causing a missed period and irregular cycle.
- Extreme exercise Exercising too much can throw off the timing of menstrual bleeding and sometimes stop it.
- Eating disorders, extreme dieting, or weight loss being underweight, whether from extreme exercise, dieting, an eating disorder, or illness, can have the same effect.
- Birth control and not just birth control pills; IUDs, implants, and rings can also cause irregular bleeding.