1. What is diarrhea in a 10-month-old baby? Diarrhea in 10-month-old babies refers to diarrhea symptoms in 10-month-old babies, that is, increased stool frequency, watery stools, soft or watery texture, and even mucus and blood streaks. This condition may be accompanied by other symptoms such as abdominal bloating, nausea, and vomiting. 2. What are the causes of diarrhea in 10-month-old babies? 1. Infection: Bacterial, viral or parasitic infections may cause diarrhea in 10-month-old babies. The most common bacterial infection is sand