What are the reasons for abdominal pain after a child has a fever?

Patient's question:

.5 children have a fever, 2 under the ribs, like the stomach always hurts, don't want to walk, don't want to eat, can drink water

Doctor's answer:

Analysis of the condition: Hello, based on the situation you provided, it is considered to be infantile gastroenteritis. Children generally have symptoms such as poor appetite, fever, vomiting, abdominal pain, and diarrhea.
Advice: Generally, gastroenteritis does not require the use of antibiotics. The indiscriminate use of antibiotics may lead to diarrhea and prolong the carrier period. Antibiotics are only needed in rare cases.
Antidiarrheal drugs can suppress diarrhea symptoms, but they may cause severe side effects in young children, such as intestinal paralysis, drowsiness, or even respiratory arrest. Therefore, they should be avoided as much as possible. Antidiarrheal drugs can also slow down intestinal motility, giving bacteria the opportunity to remain in the intestines and continue to multiply, which may prolong and worsen the condition.
Doctor's inquiry: