Menorrhagia (Heavy Menstrual Bleeding)

Obstetrics & Gynecology

Excessive menstrual blood loss interfering with physical, emotional, social, or material quality of life.

History taking

  • Cycle length, duration, clots, flooding, sanitary product use
  • Intermenstrual/postcoital bleeding, dyspareunia, pelvic pain
  • Symptoms of anaemia, contraception, pregnancy plans, drug history

Examination

  • Pallor, BP, thyroid
  • Abdominal and pelvic exam; speculum and bimanual

Red flags

  • Postcoital/intermenstrual bleeding, postmenopausal bleeding — exclude malignancy
  • Symptomatic anaemia

Differential diagnosis

  • PALM-COEIN: Polyp, Adenomyosis, Leiomyoma, Malignancy, Coagulopathy, Ovulatory dysfunction, Endometrial, Iatrogenic, Not classified

Recommended investigations

  • CBC, ferritin, TSH, coagulation if indicated
  • Pregnancy test, Pap smear
  • TVS pelvis, endometrial biopsy if >45 y or risk factors

Diagnosis

  • Clinical + investigations to find PALM-COEIN cause

Initial treatment / management

  • Iron replacement
  • First-line: LNG-IUS (Mirena) if no fertility plan, or tranexamic acid + NSAIDs during menses
  • Second-line: combined OCP, oral progestogens
  • Refractory or structural: surgery (hysteroscopy, endometrial ablation, hysterectomy)

Prescription examples

  • Tab Tranexamic acid 1 g PO TDS x 3–5 d during menses
  • Tab Mefenamic acid 500 mg PO TDS during menses
  • Combined OCP cyclically
  • Mirena (LNG-IUS) insertion

Follow-up advice

  • Review at 3 months for symptom control

Patient counselling

  • Iron-rich diet, supplementation, lifestyle
  • Discuss reversible (medical) vs definitive (surgical) options

Referral criteria

  • Suspected malignancy, structural cause needing surgery, refractory bleeding

Clinical pearls

  • LNG-IUS is the most effective medical therapy and avoids surgery in many
  • Endometrial sampling mandatory in women >45 y with HMB or risk factors

References

  • NICE NG88: Heavy Menstrual Bleeding
  • FIGO PALM-COEIN Classification 2018

Educational outpatient guide — verify against local guidelines before clinical use.

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