Irregular Periods: When to Worry

Irregular Periods: When to Worry

Most women experience occasional irregular periods. But persistent irregularity can signal an underlying condition that needs attention. Here's how to know when to seek help.

What is a Normal Menstrual Cycle?

A normal cycle is 21–35 days long, with bleeding lasting 2–7 days. Flow varies from light to heavy but should not be so heavy that you soak through a pad or tampon every hour.

Types of Menstrual Irregularity

Oligomenorrhea: Infrequent periods (fewer than 8 per year or cycles longer than 35 days). Common in PCOS.

Amenorrhea: Absent periods for 3+ months (secondary) or no periods by age 15 (primary). Causes include PCOS, thyroid disorders, extreme weight loss, stress, or premature ovarian insufficiency.

Menorrhagia: Heavy or prolonged bleeding. Can be caused by fibroids, polyps, adenomyosis, or hormonal imbalance.

Dysmenorrhea: Painful periods. Primary dysmenorrhea is common and manageable. Secondary dysmenorrhea (caused by endometriosis or fibroids) requires treatment.

Metrorrhagia: Bleeding between periods. Always warrants investigation.

Common Causes of Irregular Periods

• PCOS — the most common cause in reproductive-age women
• Thyroid disorders — both hypo and hyperthyroidism disrupt cycles
• Stress — physical or emotional stress disrupts the hypothalamic-pituitary axis
• Significant weight changes — extreme weight loss or gain
• Perimenopause — cycles become irregular in the years before menopause
• Uterine fibroids or polyps
• Endometriosis
• Hormonal contraceptives — some methods cause irregular bleeding

When to See a Doctor

Seek medical attention if:

• Your periods have been irregular for 3+ months
• You miss 3 or more periods in a row
• Your periods are extremely heavy (soaking through protection hourly)
• You have severe pain with periods
• You have bleeding between periods or after sex
• You are trying to conceive and have irregular cycles
• You have other symptoms like weight gain, hair loss, or acne

Diagnosis

Your doctor will assess:

1. Menstrual history and pattern
2. Hormonal panel (FSH, LH, prolactin, thyroid, androgens)
3. Pelvic ultrasound
4. Pregnancy test (to rule out pregnancy-related causes)

Treatment

Treatment depends on the underlying cause:

• PCOS: hormonal therapy, metformin, lifestyle changes
• Thyroid disorders: thyroid hormone replacement or antithyroid drugs
• Fibroids/polyps: medical or surgical management
• Stress-related: lifestyle modification, counseling

Conclusion

Irregular periods are your body's way of signaling that something needs attention. Don't ignore persistent irregularity. At GyneNepal, Dr Rashmi Bastakoti provides comprehensive evaluation and treatment for all menstrual disorders. Book an appointment or learn about our PCOS treatment.