How do I know if my son is having an allergic reaction to a food.?

Okay thank you.! @lifewithplumms

Rash on his butt might just be a diaper rash. They can vary from bumps, just spots, to skin peeling off. But keep an eye on it and if it starts to look really bad he might be allergic give it a little while to see if it clears up

Okay Bc I gave him carrots and his but is all broke out in bumps and also a rash in his butt. @lifewithplumms

Checking for hives or breakouts after eating the foods also if his breathing may change

Giving him the foods in small amounts.