Level 1: What is infant diarrhea? Infant diarrhea refers to the symptoms of increased bowel movements, thin stools, watery or yellow-green color, and even foam or blood streaks. Under normal circumstances, the number of bowel movements within 4-6 times a day is within the normal range, but if it exceeds this range, parents need to pay attention. Level 2: Causes of Infant DiarrheaThe causes of Infant Diarrhea are