P.H.
my nephew was born with sevre allergies, has been on meds since he was a few months old..my brother has the worst allergies in the family and his son got them too. My sons are not as bad but by 2 1/2-3 we knew he had to take things for them as in different season his nose would run so much and the sneezing was awful. We had him tested as we thought there could be peanut allergies going on and he is allergic to peanuts (not horribly) and Dog Silvia! who knew! so we have to give him something before he visits people with dogs.