What could be causing stomach pain in a 12-year-old boy?

1. If a boy has a weak constitution and poor physical resistance, he may contract viral infections leading to viral influenza. This can accelerate intestinal motility, causing abdominal pain, as well as symptoms such as nasal congestion, sore throat, and runny nose. Medications such as Ganmao Ling Granules or Oseltamivir Phosphate Capsules may be taken under medical guidance. 2. Consuming irritating or cold foods, or overeating, may damage the gastric mucosa, resulting in abdominal pain, possibly accompanied by indigestion, diarrhea, and other symptoms. Treatment may include medications such as Compound Rennet Capsules or Bismuth Potassium Citrate, taken as directed by a physician. 3. Acute gastroenteritis can easily result from food or water contaminated by bacteria or viruses, leading to symptoms such as diarrhea, abdominal pain, nausea, vomiting, fever, and loss of appetite. Treatment under medical advice may include medications such as Bismuth Potassium Citrate Tablets or Ciprofloxacin Hydrochloride Capsules. Timely diagnosis and symptomatic treatment are recommended.