Causes of Abnormal Uterine Bleeding
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Non-pregnant bleeding that is inegular in timing, frequency, or flow 
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Mnemonic: PALM-COEIN
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Causes of Abnormal Uterine Bleeding
Non-pregnant bleeding that is inegular in timing, frequency, or flow
Mnemonic: PALM-COEIN

STRUCTURAL CAUSES
Polyps
- Endometrial
- Cervical
Adenomyosis
- Painful heavy periods in women 30s-40s
Leiomyoma
- Increase in size in pregnancy or with OCPs
Malignancy / hyperplasia
- Consider in all peri- and postmenopausal women
NON-STRUCTURAL CAUSES
Coagulopathy
- Undiagnosed coagulopathy in adolescents
- Acquired (anticoagulants, cirrhosis)
Ovulatory dysfunction
- Adolescents
- Perimenopause
- PCOS
- Hypothyroidism
- Anorexia
- Athletes
Endometrial causes
- Diagnosis of exclusion
Iatrogenic
- Hormonal contraceptive use
- Hormone replacement therapy
- Post-GYN surgery
Not otherwise classified
- Endometritis
- Cervical erosions, cervicitis
- Vaginal trauma
- Foreign bodies
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