Appendicitis is a condition in which the appendix becomes inflamed. Its symptoms can become very uncomfortable, painful, and potentially life-threatening if left untreated.
Sudden appendicitis is the most common cause of acute abdominal pain requiring surgery in the United States. Additionally, more than 5 percent of the population develops appendicitis at some point.
Though it most commonly occurs between the ages of 10 and 30, appendicitis can develop at any age.
Source: medicalnewstoday