Final answer:
Severe RLQ pain that suddenly goes away can indicate appendicitis with a complication of rupture leading to peritonitis, which requires immediate medical treatment including an appendectomy.
Step-by-step explanation:
If a patient had severe right lower quadrant (RLQ) pain that has suddenly gone away, there is a suspicion of appendicitis. The sudden disappearance of pain may be due to the rupture of an inflamed appendix, leading to the release of pressure in the area. However, this is not a sign of resolution, but rather a concerning complication known as peritonitis, which is an inflammation of the peritoneum (the lining of the abdominal cavity). This condition can be life-threatening and requires immediate medical attention. In the case of appendicitis, typical symptoms include RLQ pain, fever, loss of appetite, and nausea. An appendectomy, which is the surgical removal of the appendix, is the standard treatment to prevent the progression to peritonitis.