What is the reason for often saying stomach pain after eating or when halfway through a meal?

Patient's question:

Still vomiting, especially severely in the morning. Previous treatment and effectiveness: Ignored tests, examination results: None. Regardless of what kind of help is needed: The cause of the disease

Doctor's answer:

1, Chronic pediatric gastritis. It manifests as recurrent episodes of irregular abdominal pain, mostly located in the upper abdomen and around the umbilicus. In some children, the pain location is not fixed, and it often intensifies after bowel movements.
2, Pediatric peptic ulcer, primarily based on primary duodenal ulcer. Clinically, it presents as recurrent pain in the periumbilical and upper abdominal regions, accompanied by belching, acid reflux, constipation, or hunger, especially at night.
3, Pharyngitis and mesenteric lymphadenitis caused by upper respiratory tract infection. Its characteristic is having a fever about a week ago.
Advice: I recommend taking your child to the hospital for a thorough examination to identify the cause and provide symptomatic treatment.