What are the symptoms of infantile indigestion?

Infants appear dyspepsia mainly because of gastrointestinal tract development is not perfect, improper feeding will lead to gastrointestinal dysfunction, after eating children appear abdominal pain abdominal distension, bowel sounds hyperactivity, halitosis, refusal to eat, crying, sleep is not steady, spit milk, exhaust more, constipation or diarrhea.