Appendicitis in kids is a medical emergency characterized by pain that often starts around the belly button and moves to the lower right abdomen, worsening with movement. Other symptoms include fever, nausea, vomiting, loss of appetite, and sometimes diarrhea or changes in bowel habits. Treatment involves surgery (an appendectomy) to remove the appendix as soon as possible, along with antibiotics. If you suspect your child has appendicitis, seek immediate medical attention