Differential Diagnosis for Right Iliac Fossa (RIF) Pain
Single Most Likely Diagnosis
- Ovarian cyst: This is a common cause of RIF pain in females, especially if the pain is sudden and severe. Ovarian cysts can rupture, causing intense pain.
Other Likely Diagnoses
- Appendicitis: Although appendicitis typically presents with pain in the right lower quadrant, it can sometimes radiate to the RIF.
- Ectopic pregnancy: This is another possible cause of RIF pain in females, especially if they are of childbearing age and have a history of missed periods or irregular menstrual cycles.
- Constipation or bowel obstruction: These conditions can cause abdominal pain that may be referred to the RIF.
Do Not Miss Diagnoses
- Ovarian torsion: This is a medical emergency that requires prompt attention. It can cause severe, sudden pain in the RIF and is often associated with nausea and vomiting.
- Ruptured ectopic pregnancy: This is another life-threatening condition that can cause severe abdominal pain, including in the RIF.
- Intestinal ischemia or infarction: These conditions can cause severe abdominal pain and are medical emergencies.
Rare Diagnoses
- Endometriosis: This condition can cause chronic pelvic pain, including in the RIF, but it is less likely to cause sudden, severe pain.
- Diverticulitis: This condition typically affects the left side of the abdomen but can occasionally cause pain in the RIF.
- Inflammatory bowel disease (e.g., Crohn's disease or ulcerative colitis): These conditions can cause chronic abdominal pain, including in the RIF, but are less common causes of sudden, severe pain.