1. Symptoms of diarrhea and dehydration in babies Diarrhea and dehydration in babies refers to a serious disease caused by the baby losing a large amount of water and electrolytes in the body due to diarrhea. The main symptoms include thirst, decreased urine output, dry skin, and dry eyes. If not treated in time, serious conditions such as palpitation, dizziness, and shortness of breath may occur. 2. How to prevent diarrhea and dehydration in babies. Prevention is the best treatment method. In order to prevent diarrhea and dehydration in babies, parents can take the following measures: pay attention to dietary hygiene and avoid eating unclean food; keep the environment clean and hygienic to avoid the spread of infection