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Appendicitis is a common reason for belly pain. It happens when the appendix becomes infected and inflamed.
Your appendix is a small, finger-shaped sac that is attached to your large intestine. Experts do not know what the appendix does in the body. Most of the time it does not cause problems.
Current as of: May 1, 2026
Author: WebMD Ignite Staff Clinical Review Board All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
Clinical Review Board All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
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