Hi
Welcome to HMC. Thank you for posting your query.
In infants and children ,
diarrhoea occurs in conditions like infections with GI virus,
hepatitis A, B, C. Let me guide regarding symptoms in case of infections. It includes jaundice, enlarged liver, abdominal distension, vomiting,
weight loss,
diarrhea, enlarged spleen too,
elevated liver enzymes. in case of GI virus infection , watery and frequent diarrhoea occurs.
Almost in all infections, the same symptoms occur. So it should be diagnosed only blood tests for hepatitis A, B, C, fecal test for GI virus.
Hope i have answered your question, if you have further questions , i will be happy to help.