Abnormal uterine bleeding (AUB), also known as atypical vaginal bleeding, is vaginal bleeding from the uterus that is abnormally frequent, lasts excessively long, is heavier than normal, or is irregular.

Symptoms include vaginal bleeding that occurs irregularly, at abnormal frequency, lasts excessively long, or is more than normal. Normal frequency of periods is 22 to 38 days. Variation in the length of time between cycles is typically less than 21 days.

The causes of AUB are divided into nine groups: uterine polyps, fibroids, adenomyosis, cancer, blood clotting disorders, problems with ovulation, endometrial problems, healthcare induced, and not yet classified.

Age >40 years

  • Obesity
  • PCOS
  • Diabetes mellitus
  • Nulliparity
  • Early menarche or late menopause (>55 years of age)

Diagnosis of AUB starts with a medical history and physical examination. Normal menstrual bleeding patterns vary from woman to woman, so the medical history covers specific details about the woman's individual menstrual bleeding pattern, such as its predictability, length, volume, and whether she experiences cramps or other pain.

Treatment depends on the underlying cause. Options may include hormonal birth control, gonadotropin-releasing hormone (GnRH) agonists, tranexamic acid, NSAIDs, and surgery such as endometrial ablation or hysterectomy

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