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Gynecological Bleeding (Abnormal)

What is Gynecological Bleeding (Abnormal)?

Gynecological bleeding, often called abnormal uterine bleeding (AUB), 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)
• Bleeding after intercourse
• Heavy or prolonged periods that last longer than 7–8 days
• Bleeding after menopause

In a typical 28‑day cycle, menstrual flow lasts 3‑7 days with a predictable amount of blood loss (≈30–80 mL). When the amount, timing, or frequency deviates from this pattern, it is considered abnormal and warrants evaluation. The underlying cause can be hormonal, structural, infectious, systemic, or iatrogenic (medication‑related).

Common Causes

More than 200 conditions can produce abnormal gynecological bleeding, but the most frequent are listed below.

• Hormonal imbalance (anovulation) – often seen in polycystic ovary syndrome (PCOS) or perimenopause.
• Uterine fibroids (leiomyomas) – benign smooth‑muscle tumors that distort the uterine cavity.
• Endometrial polyps – localized overgrowths of the lining that can cause intermittent spotting.
• Endometriosis – ectopic endometrial tissue that responds to hormonal cycles.
• Adenomyosis – endometrial tissue within the uterine muscle, leading to heavy, painful bleeding.
• Endometrial hyperplasia or cancer – precancerous or malignant changes of the lining, especially after menopause.
• Pregnancy‑related bleeding – implantation bleeding, miscarriage, ectopic pregnancy, or placental abnormalities.
• Infections – sexually transmitted infections (chlamydia, gonorrhea) or pelvic inflammatory disease can cause irregular spotting.
• Medications – hormonal contraceptives, anticoagulants, progesterone‑only pills, and some herbal supplements.
• Systemic diseases – thyroid disorders, clotting disorders (von Willebrand disease), liver disease, or uncontrolled diabetes.

Associated Symptoms

Abnormal bleeding rarely occurs in isolation. Patients often experience one or more of the following:

• Pelvic or lower‑abdominal pain/cramping
• Spotting or discharge after intercourse
• Fatigue, weakness, or shortness of breath (signs of anemia)
• Weight gain or loss, hot flashes, hair loss (possible thyroid or hormonal clues)
• Sudden onset of severe pain (suggestive of ectopic pregnancy or torsion)
• Fever, chills, or foul‑smelling vaginal discharge (infection)
• Breast tenderness or changes in libido (hormonal influence)
• Palpable uterine mass or pelvic pressure (fibroids, polyps)

When to See a Doctor

While occasional spotting can be benign, the following situations should prompt a timely medical visit:

• Bleeding that lasts longer than 7 days or is so heavy you need to change a pad/tampon every hour.
• Bleeding after menopause (any vaginal bleeding after 12 consecutive months of no periods).
• Intermenstrual bleeding that occurs more than twice in a month.
• Painful bleeding accompanied by fever, chills, or foul discharge.
• Signs of anemia: persistent fatigue, shortness of breath, dizziness, or pale skin.
• Known pregnancy with any vaginal bleeding.
• Bleeding after a recent change in medication (especially birth control, anticoagulants, or herbal supplements).

Early evaluation can identify treatable conditions and prevent complications such as severe anemia or infertility.

Diagnosis

Evaluation begins with a thorough history and physical exam, followed by targeted tests. The typical diagnostic pathway includes:

1. Clinical History

• Age, reproductive goals, sexual activity.
• Pattern of bleeding (duration, volume, timing, relation to intercourse).
• Medication use (hormonal, anticoagulants, herbal).
• Past gynecologic history (fibroids, polyps, surgeries, miscarriage).
• systemic illnesses (thyroid, clotting, liver disease).

2. Physical Examination

• General assessment for pallor, blood pressure, heart rate (anemia).
• Pelvic exam – visual inspection of vulva, speculum exam for cervical lesions, bimanual exam for uterine size, adnexal masses, and tenderness.

3. Laboratory Tests

• Complete blood count (CBC) – assesses anemia and platelet count.
• Pregnancy test (urine or serum β‑hCG) – rule out pregnancy‑related bleeding.
• Thyroid‑stimulating hormone (TSH) – detects thyroid dysfunction.
• Coagulation profile (PT/INR, aPTT) if anticoagulation is suspected.
• Hormone panel (estradiol, progesterone, prolactin) in complex cases.

4. Imaging

• Transvaginal ultrasound (TVUS) – first‑line imaging to evaluate uterine lining, fibroids, polyps, and ovarian cysts.
• Sonohysterography (saline infusion sonography) – enhances visualization of intracavitary lesions.
• Magnetic resonance imaging (MRI) – reserved for ambiguous findings or extensive adenomyosis.

5. Endometrial Assessment

• Endometrial biopsy – office sampling of the uterine lining, recommended for women >45 y or <45 y with risk factors for cancer.
• Hysteroscopy – direct visualization with possibility of immediate polyp or fibroid removal.

Treatment Options

Management is individualized based on cause, severity, age, desire for future fertility, and overall health. Options range from lifestyle modifications to surgery.

1. Hormonal Therapies

• Combined oral contraceptives (COCs) – regulate cycle and reduce heavy bleeding.
• Progesterone‑only pills, injectable medroxyprogesterone acetate, or LNG‑IUS (levonorgestrel intrauterine system) – effective for anovulatory bleeding and endometrial hyperplasia.
• Tranexamic acid – antifibrinolytic taken during menses to reduce blood loss (1,000 mg three times daily for up to 5 days).
• Non‑steroidal anti‑inflammatory drugs (NSAIDs) – decrease prostaglandin‑mediated bleeding and relieve cramps.

2. Non‑Hormonal Medical Options

• Iron supplementation for iron‑deficiency anemia.
• Desmopressin (DDAVP) for mild von Willebrand disease.
• Thyroid hormone replacement if hypothyroidism is identified.

3. Surgical & Procedural Interventions

• Polypectomy – hysteroscopic removal of endometrial polyps.
• Myomectomy – excision of fibroids while preserving the uterus (laparoscopic, hysteroscopic, or open).
• Endometrial ablation – destroys the uterine lining; best for women who have completed childbearing.
• Uterine artery embolization (UAE) – minimally invasive radiologic procedure to shrink fibroids.
• Hysterectomy – definitive treatment for refractory bleeding, large fibroids, or cancer.

4. Lifestyle & Home Measures

• Maintain a healthy weight – obesity exacerbates estrogen‑driven bleeding.
• Limit alcohol and caffeine, which can increase uterine contractility.
• Track cycles with a diary or app to help clinicians recognize patterns.
• Use heat packs for cramp relief and keep a balanced iron‑rich diet (leafy greens, red meat, legumes).

Prevention Tips

While not all causes are preventable, several strategies can reduce the risk of abnormal bleeding or detect problems early:

• Attend regular gynecologic exams (annually for most women, more often if you have risk factors).
• Schedule a Pap smear and HPV test as recommended; treat cervical dysplasia promptly.
• Manage chronic conditions such as thyroid disease, diabetes, and hypertension.
• Use contraception consistently if you are on hormonal methods; discuss any spotting with your provider.
• Stay physically active – exercise improves hormonal balance and circulation.
• Avoid smoking; tobacco can worsen uterine blood flow and interfere with hormone metabolism.
• Limit use of over‑the‑counter herbal supplements (e.g., dong quai, black cohosh) without medical supervision.
• Promptly treat sexually transmitted infections and pelvic inflammatory disease.

Emergency Warning Signs

Key Take‑aways

Abnormal gynecological bleeding is a common symptom with a wide differential diagnosis. Prompt evaluation can uncover treatable conditions ranging from hormonal imbalances to malignancy. Women should seek medical attention for heavy, prolonged, or post‑menopausal bleeding, and they should never ignore accompanying severe pain or systemic signs. With appropriate diagnosis and personalized treatment, most women achieve symptom control and preserve reproductive health.

References

• Mayo Clinic. “Abnormal uterine bleeding.” Accessed July 2026. https://www.mayoclinic.org
• American College of Obstetricians and Gynecologists (ACOG). “Management of Abnormal Uterine Bleeding in Reproductive-Age Women.” Practice Bulletin No. 150, 2023.
• Cleveland Clinic. “Uterine Fibroids.” Updated 2025. https://my.clevelandclinic.org
• World Health Organization. “Guidelines for the Prevention and Management of Heavy Menstrual Bleeding.” 2022.
• National Institutes of Health. “Endometrial Hyperplasia and Cancer.” 2024. https://www.cancer.gov
• Centers for Disease Control and Prevention. “Sexually Transmitted Infections Treatment Guidelines.” 2023.

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