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Last Updated: Dec 24, 2023
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Irregular Periods - 5 Most Common Causes Of It!

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Dr. Tuleeka SethiGynaecologist • 27 Years Exp.MBBS, DGO, DNB Obs & Gynae
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We should know about the normal menstrual pattern. On average a woman’s menstrual cycle lasts 28days. Cycle duration maybvary 24 to 35 days. Menstrual bleeding lasts for 2 -7 days with average being 5 days. 

Menstrual cycle may become irregular near menopause between 45-50years. Irregular periods can be due to:

  1. Lifestyle changes: Extreme weight loss or gain,excessive exercise and stress can lead to irregular periods. If your BMI is less than 18.5 or more than 30 it affects your periods. 
  2. Contraceptives: Oral contraceptive pills can cause breakthrough bleeding or intrauterine hormone device May cause irregular periods. 
  3. PCOS: Polycystic ovarian syndrome is a very common problem these days which shows hormonal imbalance resulting in development of very small multiple cysts in ovaries which causes delayed and prolonged periods. It May have other long term disorders like infertility , metabolic disorders etc. 
  4. Gynecological Probems: Gynecologic problems like uterine fibroids or polyp or ovarian disorders. Irregular bleeding May also occur in case of unsuspected pregnancy or early miscarriage 
  5. Medical Disorders: Medical disorders like thyroid disorders May also cause irregular periods.
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