This document summarizes information about acute appendicitis, including: - It is a nonspecific bacterial inflammatory disease that most commonly occurs between ages 20-40. - It is classified into different types depending on severity from acute to gangrenous. - Clinical signs include abdominal pain, nausea, vomiting and fever. Diagnosis involves examinations, analyses and imaging. - Treatment is surgical removal of the appendix, either through open or laparoscopic appendectomy. Postoperative complications can include bleeding, infection or obstruction.