They can but they can also get worse. If she has confirmed allergies, she should have an Epi just in case. We always carry Benedryl with ours too so it's always on hand. Why did her dad give her two things she's allergic to btw??
Nothing confirmed - but nothing I am willing to try until I do take her to an allergist. Her dad and I are not together, I have told him multiple times, multiple ways no dairy - I don't know if he doesn't believe me, doesn't care, or doesn't know yogurt is dairy. The berries were a small reaction around the mouth to Gerber food at like 5-6 months - I never tried them again of course but I may have not had that on her list of not to eat foods.
It is a sad fact that he is just now around, it's mostly his mom visiting, and we also had to tell them recently to stop using baby powder. I have asked for them to take a class but they refuse.