I have a 1 and a half year old boxer named bobbi. Two days ago she woke up covered in hives and bumps, her face was about three times its normal and they had spread up her throat. We gave her Benadryl and when that didn't work got a shot from The vet. That made then go away, then yesterday she had them again! But Benadryl made them go away and they werent as bad. Thinking it was something in my room she slept with another household member last night but she had them again this morning. Benadryl is doing the trick, but I hate for her to be so miserable in the morning. 

the only thing that is different is we have just moved into a new house. I'm trying to find the cause and eliminate it but I just don't know what could be causing these. does anyone have an idea? Common allergies or something your dog is allergic too??