Appendicitis is an inflammation of the appendix, a small organ in the lower right side of the abdomen. It is a medical emergency and requires immediate treatment. The most common symptom of appendicitis is abdominal pain, which usually starts near the belly button and then moves lower to the right side of the abdomen. The pain can range from being mild to severe, and it may come and go at first, but as the condition progresses, the pain typically becomes more intense and constant. Other symptoms may include nausea, vomiting, fever, chills, constipation, and diarrhea. If left untreated, appendicitis can lead to a ruptured appendix, which can cause severe pain, infection, and even death. Therefore, if you experience any of the symptoms of appendicitis, it is important to seek medical attention as soon as possible.