I have always had a problem with Poppy's dirty bum, which I have to wash frequently. Tried lots of different ways of cleaning it, but dunking her in shallow water is the only thing that works. Anyway last week I noticed that she has lost all her fur around tail and legs. I put some dermisol cream on it, then took her to vet. She said there was nothing much I could do except carry on putting on dermisol. But it is not getting any better and her poor little legs look so pitiful, I feel there must be more efficient treatment. Has anyone had this problem and found a remedy that works?