yeah it is hard when it goes on for along time i get so upset seeing her suffer she somtimes cannot wlak and yelps in pain when these episodes happen the vets were giving her antibiotis and paainkillers but to be honest this didnt really help much but this time the vet gave her steriods and i have to say it worked better although she was still ill for about a week the blisters did not ooze and her appertite came back aliitle and she had no blister on her bum this time either well not that we saw it will be interseting what they think your dog has good luckXX