Abnormal Vaginal Bleeding

What is Abnormal Vaginal Bleeding?

Abnormal vaginal bleeding (AVB) refers to any bleeding from the uterus that is outside the normal pattern of a menstrual cycle. This can include:

• Bleeding between periods (intermenstrual spotting)
• Heavy or prolonged periods (menorrhagia)
• Bleeding after intercourse (post‑coital bleeding)
• Bleeding after menopause (post‑menopausal bleeding)
• Bleeding that occurs at irregular intervals or in unpredictable amounts

Because the uterus is a highly vascular organ, even small changes in hormonal balance, tissue health, or blood‑clotting can produce noticeable bleeding. While many cases are benign, AVB can also signal serious underlying conditions that require prompt evaluation.

Common Causes

Below are the most frequently encountered conditions that can lead to abnormal vaginal bleeding. The list includes both benign and potentially serious etiologies.

• Hormonal imbalances – Fluctuations in estrogen and progesterone, often seen with puberty, perimenopause, or thyroid disorders.
• Uterine fibroids (leiomyomas) – Benign smooth‑muscle tumors that can distort the uterine cavity and cause heavy bleeding.
• Endometrial polyps – Small, usually benign growths on the lining of the uterus that can cause spotting, especially after intercourse.
• Adenomyosis – Endometrial tissue grows into the uterine muscle, leading to painful, heavy periods.
• Pelvic inflammatory disease (PID) – Infection of the upper genital tract can cause irregular bleeding and pelvic pain.
• Contraceptive issues – Missed pills, intrauterine device (IUD) displacement, or hormonal implant side‑effects.
• Pregnancy‑related complications – Implantation bleeding, miscarriage, ectopic pregnancy, or placenta previa.
• Endometrial hyperplasia or cancer – Overgrowth of the uterine lining, sometimes precancerous, can present with post‑menopausal bleeding.
• Coagulation disorders – Conditions such as von Willebrand disease or use of anticoagulant medication.
• Stress and lifestyle factors – Extreme weight loss/gain, excessive exercise, or chronic stress can disrupt menstrual regularity.

Associated Symptoms

Abnormal bleeding rarely occurs in isolation. The following symptoms often accompany AVB and can help clinicians narrow the cause.

• Painful cramps or pelvic pressure
• Unexplained weight loss or gain
• Fever, chills, or foul‑smelling vaginal discharge (suggestive of infection)
• Breast tenderness or changes in breast tissue (hormonal link)
• Fatigue or shortness of breath (possible anemia from chronic blood loss)
• Spotting after intercourse
• Changes in bowel or bladder habits (may indicate a large fibroid or pelvic mass)

When to See a Doctor

Most women experience occasional spotting that resolves on its own, but you should schedule an appointment if any of the following occur:

• Bleeding that lasts longer than 7 days or is heavier than a normal period (soaking through one or more pads/tampons every hour).
• Bleeding after menopause (any vaginal bleeding after 12 months of no periods).
• Bleeding accompanied by severe pelvic pain, fever, or foul discharge.
• Sudden change in menstrual pattern after age 35.
• History of uterine or cervical cancer, or a known precancerous condition.
• Signs of anemia (fatigue, dizziness, pale skin) that you suspect are related to blood loss.

Early evaluation can prevent complications and provide peace of mind.

Diagnosis

Evaluation of abnormal vaginal bleeding typically follows a stepwise approach:

1. Detailed Medical History

• Onset, duration, amount, and pattern of bleeding.
• Medication list (including hormonal contraceptives, anticoagulants, NSAIDs).
• Reproductive history (pregnancies, miscarriages, abortions).
• Family history of bleeding disorders, fibroids, or cancers.

2. Physical Examination

• General exam for signs of anemia or systemic disease.
• Pelvic exam to assess the cervix, vagina, uterus size, and any visible lesions.

3. Laboratory Tests

• Pap smear – Screens for cervical dysplasia or cancer.
• Pregnancy test – Rules out early pregnancy or ectopic pregnancy.
• Complete blood count (CBC) – Detects anemia or infection.
• Thyroid function tests – Hypo‑ or hyper‑thyroidism can affect bleeding.
• Coagulation profile – PT/INR, aPTT, or von Willebrand factor if a bleeding disorder is suspected.

4. Imaging & Specialized Tests

• Transvaginal ultrasound – First‑line imaging to visualize fibroids, polyps, or thickened endometrium.
• Sonohysterography – Saline infusion ultrasound that better delineates intra‑uterine lesions.
• Endometrial biopsy – Recommended for women >45 y or any post‑menopausal bleeding to rule out hyperplasia or cancer.
• Hysteroscopy – Direct visual inspection of the uterine cavity; can also allow removal of polyps or fibroids.
• Magnetic resonance imaging (MRI) – Used for complex fibroids or suspected adenomyosis.

Treatment Options

Treatment is individualized based on the underlying cause, severity of bleeding, desire for future fertility, and patient preferences.

Medical Management

• Hormonal therapy
  • Combined oral contraceptives (COCs) – Regulate cycle and reduce heavy bleeding.
  • Progestin‑only pills, intrauterine system (e.g., Mirena) – Particularly effective for endometrial hyperplasia and fibroids.
  • Tranexamic acid – Antifibrinolytic that shortens bleeding episodes during periods.
  • Non‑steroidal anti‑inflammatory drugs (NSAIDs) – Reduce menstrual blood loss by 20‑50 %.
• Gonadotropin‑releasing hormone (GnRH) agonists – Temporarily shrink fibroids or adenomyosis; used short‑term due to side‑effects.
• Selective progesterone receptor modulators (SPRMs) – E.g., ulipristal acetate for fibroids (approved in many countries).
• Thyroid or coagulation disorder treatment – Correcting the underlying endocrine or clotting abnormality often normalizes bleeding.

Surgical & Procedural Options

• Polypectomy – Removal of endometrial polyps via hysteroscopy; usually curative.
• Myomectomy – Surgical excision of fibroids; preserves uterus for future pregnancy.
• Endometrial ablation – Destroys the uterine lining to reduce or stop bleeding; not recommended for women who desire future fertility.
• Hysterectomy – Definitive treatment for refractory bleeding when other options fail or cancer is present.
• Uterine artery embolization (UAE) – Radiologic procedure that cuts blood supply to fibroids, reducing size and bleeding.

Home & Lifestyle Measures

• Maintain a balanced diet rich in iron (red meat, beans, leafy greens) to counteract blood‑loss anemia.
• Track bleeding with a calendar or app; this information is valuable for your clinician.
• Avoid smoking and limit alcohol, both of which can exacerbate hormonal fluctuations.
• Engage in moderate exercise; extreme endurance training can trigger menstrual irregularities.
• Stress‑reduction techniques (yoga, mindfulness) may improve hormonal balance.

Prevention Tips

While not all causes of AVB are preventable, several strategies can lower risk or lessen severity:

• Use hormonal contraception consistently if it has been prescribed for cycle regulation.
• Schedule regular gynecologic exams (at least once every 1–3 years) to detect polyps, fibroids, or precancerous changes early.
• Maintain a healthy body weight; both obesity and underweight status can disrupt estrogen metabolism.
• Screen and treat thyroid disease promptly.
• If you have a known bleeding disorder, follow your hematologist’s recommendations regarding medication and vitamin K intake.
• Limit use of over‑the‑counter NSAIDs to the lowest effective dose, as chronic use can irritate the uterine lining.

Emergency Warning Signs

If you experience any of the following, seek emergency medical care (go to the nearest emergency department or call 911):

• Sudden, profuse vaginal bleeding that soaks through a pad or tampon in less than an hour.
• Bleeding accompanied by severe abdominal or pelvic pain, especially if you suspect a possible ectopic pregnancy.
• Signs of shock: rapid heartbeat, faintness, cold clammy skin, or confusion.
• Heavy bleeding after childbirth or miscarriage that does not stop after 30 minutes of firm pressure.
• Bleeding with a high fever (>38 °C / 100.4 °F) or foul‑smelling discharge, suggesting a severe infection.

References

• Mayo Clinic. “Abnormal uterine bleeding.” Updated 2023. https://www.mayoclinic.org
• American College of Obstetricians and Gynecologists (ACOG). “Management of Abnormal Uterine Bleeding.” Practice Bulletin No. 222, 2022.
• Centers for Disease Control and Prevention. “Heavy Menstrual Bleeding.” 2022. https://www.cdc.gov
• National Institutes of Health. “Uterine Fibroids.” 2023. https://www.nichd.nih.gov
• World Health Organization. “Guidelines for the Management of Menstrual Disorders.” 2021.
• Cleveland Clinic. “Endometrial Hyperplasia and Cancer.” 2023. https://my.clevelandclinic.org