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. - Common symptoms include abdominal pain, nausea, vomiting and fever. - Diagnosis involves examination, medical history, blood tests and imaging like ultrasound or X-rays. - Treatment is surgical removal of the appendix, which can be done openly or laparoscopically.