Bit of an odd thing to ask but can babies get allergic to formula milk even tho they have been drinking it since birth? My little boy has suddenly come out in a rash on his face and body, I took him to the docs and she thinks it’s juwt eczema flare up and gave us some cream to use, he’s not been ill or anything and is happy smiley as usual but can’t figure out what is causing the rash. He’s had it since Saturday now and it has gone less red but but is still bumpy and rough feelings on his face. I was just wondering if it could be him milk or not? He’s been on aptamil since birth and he’s now 5 months old.