Hello everyone. This is my 1st message and I hope someone can suggest something or tell me if there was a appropriate thread previously..
I have a 10weeks old dog who had a little ring around his tail since he was 7weeks old and since 8 - 9weeks, the ring developed into a 50pence size almost bald patch - looks like someone tried to shave the fur off

. It is very unsightly and as I wanted to show him when he is ready (6months) I was wondering if I can do anything to make it better. My vet told me to leave it to take its course but we all agree that it is too early for 10wks old pup to get it if it's a hormone thing. He doesn't nibble or rub his tail. I saw someone suggested to use Hibi scrub but I can't see it will help as it is only a disinfectant solution

I have another castrated dog who is 7 but he never had this kind of problem before.. I hope somebody can put me in the right direction. Thank you for reading this.