Skin problem

[Loretta]

Hello can someone help me please. I have just introduced a kitten to my older cat, after the initial rejection of the kitten, as expected, hissing and growling, he has really taken to her and they get on great. However I have noticed every time they cuddle up together and he starts licking her all over the face and head, she breaks out in a rash and a nasty looking hot spot that looked bloody and a bit pusy also appeared. I took her to the vet and was prescribed Fusiderm. All cleared up fine but I try my best to stop him licking her and as soon as he does, it breaks out again into another rash and I start again with the Fusiderm.

I have tried using Bitter Apple to deter him, but it doesn't.

Has anyone ever heard of this happening with cats licking one another? Any suggestions as to what I can do to prevent it?

Thanks.

Loretta