1. Causes of diarrhea in infants 1.1 Infectious causes 1.2 Improper diet 1.3 Overeating 1.4 Food allergy Diarrhea refers to loose stools that occur more frequently and are often accompanied by symptoms such as diarrhea and abdominal pain. Diarrhea is a very common problem for infants and young children. The main causes include infectious causes, improper diet, overeating, and food allergies. Infectious causes are caused by