Published on: 2025-06-14 | Written by: Dr. Asmaa Fathy, Consultant Obstetrician and Gynecologist
Irregular menstrual cycles are among the most common concerns faced by women at different life stages, especially during puberty or near menopause. A regular period is a sign of hormonal balance and reproductive health, while irregular periods may signal an underlying health issue that needs medical attention.
In this article, Dr. Asmaa Fathy explains the causes, symptoms, diagnosis, and treatment of irregular periods in detail.
A normal menstrual cycle occurs every 21 to 35 days and lasts between 2 to 7 days.
Your period is considered irregular if:
The time between periods varies significantly
The duration or amount of bleeding changes noticeably
You experience spotting or bleeding between cycles
You miss your period for more than two months without a clear reason
According to Dr. Asmaa Fathy, several factors can lead to menstrual irregularities, including:
Hormonal imbalances (such as thyroid dysfunction or high prolactin)
Polycystic Ovary Syndrome (PCOS)
Chronic stress and psychological pressure
Obesity or extreme weight loss
Use of hormonal birth control methods
Uterine fibroids or polyps
Puberty or approaching menopause
Excessive physical activity or poor sleep
Nutritional deficiencies or anemia
Missing your period for several months
Heavy or prolonged menstrual bleeding
Spotting or bleeding between periods
Severe menstrual cramps or unusual pain
Acne or excessive hair growth
Mood swings or severe PMS symptoms
Dr. Asmaa Fathy advises seeking medical help if you experience:
No period for more than 3 consecutive months
Unusually heavy or painful periods
Periods occurring less than every 21 days or more than every 35 days
Hormonal symptoms like hair loss or acne
Difficulty conceiving with irregular cycles
To determine the underlying cause, Dr. Asmaa Fathy may perform:
A full medical history and menstrual tracking
Pelvic examination
Blood tests (including thyroid function, prolactin, LH, FSH, and pregnancy tests)
Pelvic or transvaginal ultrasound
In some cases, MRI scans or hysteroscopy may be needed
Treatment depends on the underlying cause and may include:
Birth control pills to regulate cycles
Treatment for thyroid or prolactin disorders
Weight loss and lifestyle changes
Medications to reduce insulin resistance
Ovulation induction if pregnancy is desired
For fibroids or polyps when necessary
Stress management
Improved sleep hygiene
Balanced nutrition
Regular moderate exercise
Keep track of your menstrual calendar
Maintain a healthy weight
Avoid extreme dieting
Stay physically active
Don’t ignore unusual changes—get checked early