Differential Diagnosis for Right Lower Quadrant Pain, Fever, and Ovarian Involvement
- Single Most Likely Diagnosis
- Appendicitis: This condition is a common cause of right lower quadrant pain and fever. Although it primarily involves the appendix, the proximity of the appendix to the ovaries can sometimes lead to ovarian involvement or mimic ovarian pathology.
- Other Likely Diagnoses
- Ovarian Cyst or Torsion: Ovarian cysts can cause pain and, if they rupture or undergo torsion, may lead to fever and severe pain in the lower abdomen, which could be localized to the right side.
- Pelvic Inflammatory Disease (PID): PID can cause lower abdominal pain, fever, and involves the female reproductive organs, including the ovaries. It's a common condition in sexually active women.
- Ectopic Pregnancy: Although less common, an ectopic pregnancy can present with lower abdominal pain and fever, especially if there's associated bleeding or rupture.
- Do Not Miss Diagnoses
- Ruptured Ectopic Pregnancy: This is a life-threatening condition that requires immediate medical attention. The presentation can be similar to other causes of right lower quadrant pain but is distinguished by its severity and potential for rapid deterioration.
- Ovarian Tumor with Infection or Rupture: Although rare, an ovarian tumor that becomes infected or ruptures can present with pain, fever, and potentially life-threatening complications.
- Diverticulitis: While more common on the left side, diverticulitis can occur on the right and cause severe pain, fever, and potentially life-threatening complications if not addressed.
- Rare Diagnoses
- Mittelschmerz: This condition involves mid-cycle pain related to ovulation and can sometimes be accompanied by a low-grade fever. It's typically not as severe as other conditions listed but can be considered in the differential for cyclic pain.
- Endometriosis: While endometriosis can cause chronic pain, it's less commonly associated with acute fever and right lower quadrant pain. However, it could be considered in patients with a history of endometriosis and cyclic pain.