My dog Syd just turned 5 Jan 1st. we have been lving at our current house for the last 8 months and she has been on Origins food for the last year and half and has been doing great on it. About two weeks ago I came home to find she had a case of hives, my friend who is a vet told me to get some Benadryl so I gave her one, and by the next day the hives were gone. I couldnt figure out what caused it and thought it must have been a bug bite of some sort, since I have not changed the food or anything, she didnt even have any treats and none of them are allowed to have people food. About 4-5 days later my friend came over to check on the dogs, and agian Syd had hives, my friend gave her a benadryl and the hives very slowly went away. She was fine for 3-4 days, i went on a hiking trip, my friend who was watching the dogs ( she was instructed to give no food/treats and didnt) told me she broke out in hives, I came home the next day and she still had them and I had to give her 2 Benadryls this time and by morning the hives went away. Then a couple days later she got hives so bad I couldnt recognize her, her face was twice the size, her eyes were swollen shut, she had the worse case I ever saw, her throat swelled so bad i had to take her collar off. (Agian nothing had changed, no treats, no extra food, nothing) I gave her two Benadryl and took her to the vet, by the time the vet actually saw her her hives were barely there and they just took blood and we left. On the way home I stopped at Petco with her to buy her a new crate, she picked up a little biscuit that had been on the floor and sure enough 5 minutes later sarted breaking out in hives agian, by the time we got home she was almost as bad as before, I rushed her back to the vet and they gave her a shot, her hives didnt clear up till the next day. The vet said it could be food related or something in the enviroment, the blood came back the next day and she was fine. She has been fine since, until this morning, lastnight we went to bed and she was fine, woke up this morning and she was getting hives agian, this was before she was let outside and before she was given food, so obviously it cant be food related right? They only get fed once a day in the morning. I was thinking about it and i am pretty positive that everytime she has broken out in hives it has been windy outside, lastnight I slept with both windows open in my room and I could hear the wind in the late evening and early morning right before we got up. The last 3 times I remeber it was really windy. Im wondering if it is something in the enviroment nearby somewhere, and the wind blows it over causing her to breakout? its the only thing I can possibly think of. I keep giving her benadryl but i cant keep doing this, i dont think it can be good for her. What can I do? I have also notice she has been licking her paws but i think thats related to the hives. Do they have allergy tests for dogs? And if it is something i cant control, like something in the enviroment, how can I keep it from happening? I am at a loss, this has been going on for 2 weeks now maybe even longer, actually I think its 3. Help!!!