Differential Diagnosis for Right Lower Quadrant Pain in a Female, Especially with Movement
- Single most likely diagnosis
- Appendicitis: This is a common cause of right lower quadrant pain, especially if the pain worsens with movement. The pain often starts near the belly button and then moves to the lower right abdomen. Appendicitis is more common in younger females and can be exacerbated by physical activity or movement.
- Other Likely diagnoses
- Ovarian cyst or torsion: These conditions can cause severe pain, especially with movement, and are common in females of reproductive age. The pain is often sharp and can be accompanied by nausea and vomiting.
- Ectopic pregnancy: Although less common, ectopic pregnancy should be considered in females of childbearing age presenting with lower abdominal pain, especially if there's a history of missed periods or positive pregnancy test.
- Diverticulitis: While more common on the left side, diverticulitis can occur on the right and cause significant pain, especially if the diverticula become inflamed or infected.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed)
- Ruptured ectopic pregnancy: This is a life-threatening condition that requires immediate medical attention. The pain can be severe and is often accompanied by vaginal bleeding and signs of shock.
- Ovarian torsion: If not promptly treated, ovarian torsion can lead to necrosis of the ovary, which is a serious complication.
- Intestinal obstruction: Although less common, intestinal obstruction can cause severe abdominal pain, especially with movement, and can lead to serious complications if not treated promptly.
- Rare diagnoses
- Mesenteric lymphadenitis: This condition involves inflammation of the lymph nodes in the mesentery and can mimic appendicitis. It's more common in children but can occur in adults.
- Meckel's diverticulum: A congenital anomaly of the small intestine that can cause pain, especially if it becomes inflamed or infected.
- Right-sided diverticulitis in the context of a redundant sigmoid colon: Although rare, this condition can cause right lower quadrant pain if the sigmoid colon is redundant and the diverticula are located on the right side.