Agar baby ko kisi cheez sy allergy ho tu kaisy pta chalta hai?

A. hi usually if your child looks happy healthy and active, gains enough weight then no need to worry about anything. but if you feel or notice that after giving or using particular thing or food ,your child feel discomfort or has rashes or any other symptoms which you are not noticing usually then it indicates that something is bothering your child.or your child is allergic to that.