Girls, what's the difference between diaete and eczema? Is it age-rel…

Girls, what's the difference between diaete and eczema? Is it age-related and just need to wait out? Bumps on my face have happened before, but now there are more and with slight redness Cheeks are rough, still slightly so We called our doctor, she said give fenistil 3 times a day Could this be a reaction to changing the formula? We couldn't find it in stores, had to switch to another one in 3 days Although I noticed regardless of the brand of formula, pimples were always there, the difference is only in different amounts.