About 6 weeks ago I noticed 2 small "marks" around my Rocky's nose.. at first I thouhgt that maybe he scratched himself or someting, but later I realized that it was not a scratch, only his skin but kind of pale.. like a round mark on his skin but the colour of this mark is lighter than the colour of Rocky's skin. What is more I noticed, that he has less hair on those 2 marks.. I hope you know what I mean..
I went to a vet and he told me that it may be some skin genetic desease!
So I went to his firts vet, the one who treated Rocky when he was sick when he was little and he said, that it may be some kind of skin infection.
The vet gave me some cream and we will see what happens next.
Do you know what it can be?? To tell you the truth I am rather stressed about it, I am affraid that it may be something serious

Please help!