What is the most common complication of appendicitis?

The most common complication of appendicitis is peritonitis. This occurs when the inflamed appendix ruptures, allowing bacteria and pus to spill into the abdominal cavity. The resulting inflammation of the peritoneum, a membrane that lines the abdominal wall and covers the abdominal organs, leads to peritonitis. This condition can escalate rapidly and requires prompt medical intervention, often in the form of surgery and antibiotics.

Understanding peritonitis as a complication highlights the importance of timely diagnosis and treatment of appendicitis, as delayed intervention can lead to this severe outcome. Other complications, while they can occur, are less frequent or may arise under specific circumstances. For instance, septic shock can arise from severe infections, but it is not the most immediate or common complication. Intestinal obstruction may occur if there is significant inflammation or adhesions from prior surgeries, but again, this is less common compared to peritonitis. Hemorrhage might occur in specific cases, such as a perforated appendix, but it is not as prevalent as peritonitis after an appendiceal rupture.