What is indigestion and diarrhea? Indigestion and loose stools are a digestive disorder syndrome caused by multiple factors such as food intake patterns, body metabolism, immune system, and intestinal flora. It leads to increased bowel movements and thin and watery stools. Infants, young children, and preschool children have fragile immune systems and are more likely to be infected with enteroviruses and bacteria, causing indigestion and diarrhea. For children, this situation is unavoidable, and parents can only prepare it through family preparation