Discussions that mention benadryl

Allergies board

After eatting popcorn my 7 year old broke out in hives. Is it possible to have allergy to popcorn? I took him to doctor and got benadryl and they went away. He has eatten popcorn before and this has never happend till now. It is the only food I can think of because that day it was the only thing he had eatten and then he broke out. I was wondering does this mean he can't eat corn either? Any advice would be great. thanks :D