Persistent mucus in stools could be due to conditions like infections, allergies, gut inflammation. With history of milk allergies, maybe the child is allergic to some other foods as well.
Next Steps
1.Try to go for a detailed examination by a pediatrician.
2. Monitoring of weight
3. Routine microscopy to rule out any malabsorption, infections
4. Consult Physician for need of deworming agents
5. Look for any development of rash in the local area
Health Tips
1. Avoid milk and milk products
2. Keep a soft diet for the child
3. Check for family history of Asthma / drug allergies/ food allergies in family
4. May need a consultation from pediatric gastroenterologist/ immunologist