My English Bulldog has been getting hives on and off for almost a week now and I feel helpless. Been to the vet twice and a trip to pet emergency. I've been told different causes from food or grass allergies and read that the saliva from a flea can cause them too. Having trouble keeping the hives under control and would love some advice besides giving her Benadryl and prednisone. Is there any creams or treatments that anyone can recommend? Please help!!