The causes of appendicitis include blocking in the appendix, or bacterial infections. If it is not treated, it may lead to peritonitis and shock. Most serious appendicitis happens to younger children and elder adults. Appendicitis is common between the ages of ten and fourteen for males, and fifteen and nineteen for females. The most usual treatment is an appendectomy which means removing the appendix. Sometimes, it gets better without surgery. Some people think that eating vegetables will help, but no chances should be taken. "Seek medical advice" if in doubt.