Question
A four-month-old baby continues to have diarrhea with froth after eating cooked yellow rice porridge, with bowel movements occurring five times a day, sometimes even resembling water. The regular stool test results are normal, but the frothy diarrhea symptoms have not improved. The baby has experienced nausea and vomiting since birth, with ten episodes of vomiting per day during the postpartum period. Now, at four months old, the baby has diarrhea five times a day, and sometimes the stool is watery. Probiotic treatment has been administered, but there has been no significant effect. The baby is four months old and weighs 14 jin (about 7 kilograms), having experienced nausea and vomiting since birth.