1. Definition and Symptoms of Diarrhea in Babies Diarrhea refers to an increase in the number of bowel movements per day, large and loose feces, or even watery or mucus-like stools, accompanied by uncomfortable symptoms such as abdominal distension, abdominal pain, nausea, and vomiting. For babies, the number of bowel movements per day varies depending on the feeding method, but if more than 5 loose stools occur, it can be considered diarrhea. 2. Causes of diarrhea in babies 1. Infectious causes: bacteria, viruses, parasites, etc. 2. Dietary reasons: allergic reactions, unclean diet, etc. 3. Drug reasons: excessive use of antibiotics, etc. 4. Other causes: intestinal obstruction, congenital intestinal anomalies, etc. 3. Baby