What is the allergy symptom of child drinking goat milk powder

If the child is allergic to the protein in goat milk powder, digestive tract symptoms can occur after drinking goat milk, mainly manifested as diarrhea, abdominal pain, abdominal distension, changes in stool characteristics, mucus or blood in stool, frequent farting, irritability of the child, refusal to feed, rash and shortness of breath.