Appendicitis, the inflammation of the small appendix of the intestine, causes a painful infection in the belly. It is rare in children under five but not unheard of. Typically, Jimmy will experience pain in the right lower part of his belly, just above the groin. It starts slowly but soon becomes excruciating, while fever and vomiting may develop. Appendicitis often shows up in an atypical fashion: The child could be feverless, and the pain could subside after increasing (not a good thing, because it could mean that the abscess has ruptured and the infection will spread). It may even happen in kids too young to point to their bellies. For these reasons, belly pain in kids always provokes suspicions of appendicitis. Still, the most reliable sign is the intensity of the pain. If Jimmy suddenly complains of intense abdominal pain, don’t second-guess yourself. If you have any doubt, call your doctor for advice. The only way to treat a confirmed case of appendicitis is surgery.