Intermenstrual bleeding (IMB) refers to vaginal bleeding that occurs between regular menstrual periods. It can range from light spotting to heavier flow and may happen unpredictably. While sometimes harmless, it can signal an underlying condition that needs medical attention.
Common symptoms
- Bleeding or spotting outside your usual menstrual cycle.
- Blood may appear pink, red, or brown.
- Associated symptoms (not always present):
- Pelvic pain or cramping. Unusual vaginal discharge.
- Fatigue (if bleeding is heavy or frequent).
Possible causes
IMB can result from various factors, including:
- Hormonal Imbalances:
Fluctuations in oestrogen/progesterone (e.g., perimenopause, thyroid issues).
Contraceptives (pills, IUDs) during adjustment periods. - Infections:
Sexually transmitted infections (STIs) like chlamydia.
Pelvic inflammatory disease (PID). - Structural Issues:
Uterine polyps, fibroids, or cervical lesions.
Endometrial hyperplasia (thickened uterine lining). - Medical Conditions:
Endometriosis, adenomyosis, or PCOS.
Blood clotting disorders. - Lifestyle Factors:
Extreme stress, rapid weight changes, or vigorous exercise. - Other:
Miscarriage or ectopic pregnancy (if sexually active).
Rarely, cervical or uterine cancer.
Diagnosis
- Medical History: Discuss symptoms, cycle patterns, and lifestyle.
- Physical Exam: Pelvic exam to check for tenderness, masses, or discharge.
- Tests:
Blood tests: Hormone levels, thyroid function, or pregnancy.
Ultrasound: To visualise the uterus, ovaries, or fibroids.
Swabs/Cultures: Rule out infections (e.g., STIs).
Biopsy: Endometrial sampling if cancer is suspected.
Hysteroscopy: To inspect the uterine cavity for diagnosis and treatment of polyps.
Treatment options
Treatment depends on the cause:
- Hormonal Therapies:
Birth control pills to regulate cycles.
Progesterone supplements for endometrial issues. - Infections: Antibiotics for STIs or PID.
- Structural Issues:
Surgical removal of polyps, fibroids, or cysts. - Lifestyle Adjustments:
Stress management, balanced diet, and moderate exercise.
Self-care & prevention
- Track your cycle and symptoms in a diary.
- Use protection to prevent STIs.
- Maintain a healthy weight and manage stress.
- Avoid smoking, which can worsen hormonal issues.
eGynaecologist Advice
- IMB is common but should never be ignored as many causes are treatable with early intervention and you should always consult your gynaecologist for personalized care.
- You must seek gynaecological consultation if inter menstrual bleeding persists for > 3 cycles or worsens or if foul smelling discharge.
Frequently Asked Questions
Can stress cause IMB?
Yes. Stress disrupts hormone regulation (e.g., cortisol spikes), potentially leading to irregular bleeding.
Is IMB linked to cancer?
While rare, persistent IMB can signal endometrial or cervical cancer, especially in women over 40.
Can weight changes cause IMB?
Yes. Significant weight loss/gain or obesity disrupts oestrogen levels, leading to irregular bleeding.
Can perimenopause cause IMB?
Yes. Hormonal fluctuations during perimenopause (ages 40–50) often lead to irregular spotting or bleeding.
