Level 1: Causes of baby diarrhea There are many causes of baby diarrhea, common ones include infectious diarrhea, allergic diarrhea, indigestion, etc. Infectious diarrhea is caused by eating unclean food or coming into contact with germs. In this case, the baby will also be accompanied by symptoms such as fever and vomiting; allergic diarrhea is caused by the baby being allergic to certain foods. In some cases, allergic reactions such as skin itching may occur; indigestion may be caused by the baby eating too much or eating too fast, resulting in an overburdened gastrointestinal tract. Level 2: How to relieve your baby’s diarrhea. In order to relieve your baby’s diarrhea, you must first maintain adequate