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Definition

Appendicitis is inflammation of the appendix. The appendix is a small pouch attached to the beginning of your large intestine.

Symptoms

The symptoms of appendicitis vary. It can be hard to diagnose appendicitis in young children, the elderly, and women of childbearing age.

Typically, the first symptom is pain around your belly button. (See: Abdominal pain) The pain may be vague at first, but becomes increasingly sharp and severe. You may have reduced appetite, nausea, vomiting, and a low-grade fever.

As the inflammation in the appendix increases, the pain tends to move into your right lower abdomen and focuses directly above the appendix at a place called McBurney's point.

If your appendix ruptures, the pain may lessen briefly and you may feel better. However, once the lining of your abdominal cavity becomes inflamed and infected (a condition called peritonitis), the pain gets worse and you become sicker.

Your abdominal pain may be worse when walking or coughing. You may prefer to lie still because sudden movement causes pain.
Later symptoms include:

• Chills
• Constipation
• Diarrhea
• Fever
• Loss of appetite
• Nausea
• Shaking
• Vomiting