II. Causes: Pregnancy Related Acute Pelvic Pain

  1. Early Pregnancy
    1. Ectopic Pregnancy
    2. Miscarriage
      1. Threatened Abortion
      2. Incomplete Abortion
      3. Septic Abortion
    3. Ruptured corpus luteum cyst
    4. Round ligament pain
  2. Later Pregnancy
    1. Preterm Labor
    2. Abruptio Placentae (Placental Abruption)
    3. Uterine Rupture
    4. Ovarian vein thrombosis
    5. Pubic Symphysis separation
  3. Throughout Pregnancy
    1. Ovarian Torsion
  4. Fertility treatment specific conditions (with or without current pregnancy)
    1. Ovarian Hyperstimulation Syndrome
    2. Heterotopic Pregnancy (rare)
  5. Postpartum Pelvic Pain
    1. Postpartum Endometritis
    2. Perineal Trauma (esp. Assisted Delivery)
    3. Urinary Tract Infection

III. Causes: Gynecologic Causes of Acute Pelvic Pain

  1. Mittelschmerz
  2. Ovarian Cyst (Hemorrhage or rupture)
  3. Ovarian Torsion
  4. Acute Pelvic Inflammatory Disease or Tubo-Ovarian Abscess
  5. Endometriosis
  6. Degenerating Uterine Fibroids
  7. Primary Dysmenorrhea
  8. Pelvic Neoplasm (especially post-menopausal)
  9. Intrauterine Device migration, retention or perforation
  10. Imperforate Hymen (adolescent)
  11. Transverse vaginal septum (adolescent)
  12. Pelvic Floor Dysfunction
  13. Vaginismus
  14. Vaginal Atrophy (Postmenopause)

VI. Causes: Miscellaneous Causes of Acute Pelvic Pain

  1. Abdominal Muscle Wall Pain
    1. See Abdominal Muscle Wall Pain Causes
  2. Sexual abuse or Intimate Partner Violence
  3. Trauma
    1. Bowel perforation
    2. Bladder perforation
  4. Vascular Abnormalities
    1. Iliac Artery Dissection
    2. Pelvic Vein Thrombophlebitis

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