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Symptoms of appendicitis in children. Always take your child to the hospital if you suspect they have appendicitis. Children arenât always able to describe how theyâre feeling. They also may have a difficult time pinpointing the pain, and they may say that the pain is in their entire abdomen.
1 Mechanical blockage of the appendix by hard stool, a foreign body, or thick mucus may also lead to bacterial infections.  The signs and symptoms of appendicitis may include aching pain that begins around the umbilicus (belly button) and then shifts to the lower right abdomen.