Milk and eggs eaten together with diarrhea may be due to indigestion, food intolerance, food spoilage and so on. 1. Indigestion: Milk and eggs contain a lot of protein, eat some milk and eggs in moderation, can provide the body with essential nutrients, but if the milk and eggs at the same time too much intake, it is easy to lead to indigestion and thus cause diarrhea. 2. Food intolerance: If these two eat together diarrhea, may be caused by intolerance to certain substances in the food, such as protein sensitivity, may lead to diarrhea or other discomfort. 3. Food spoilage: If either food spoils when you eat milk and eggs, it may lead to acute gastroenteritis, which can cause diarrhea. Milk and eggs eaten together when diarrhea is serious, must promptly go to the hospital, with the doctor to identify the cause and treatment.