itching dog: I have tried everything to cure my dog of his itching and I think it is the flea and heart worm medicine called Revolution that is causing it. I just now found a list of side effects and "pruritus (itching), urticaria (welts, hives), and erythema (skin redness)" was listed. I am going to get him some old fashioned heart worm pills and find an alternative flea preventer.
