Try A&D ointment (yes, same as used for diaper rash)…. and OK if they lick this off.... There is a problem that some of us breeders have had that we call tail crud.. however this usually happened when the pups were 1 to 2 wks... after my first experience with this, I used A&D on every litter, every day on the tail tips.... but your pup could have this from when he was a baby....
have you considered having a vet look at it?
my dog had itchy dry & flakey spots as a wee pup, and it turned out it was demodetric mange. I was glad I had it evaluated by a vet. I got a special ointment to apply that took care of the problem.
What does Demodetric Mange look like? What kind of medication did the vet perscribe.
When I first took Chance into the vet I told him about the tail. He said that he had a mild irritation on it and not to worry but it still is bothering him. Any time I touch it he will immediately chew on his tail.
for my dog it started out as very small, whitish/pinkish, just dry looking patches. I thought nothing of it at first, then it got worse and it spread. at the base of his tail, on his side, on his belly. tiny - about the size of a dime at their largest. it's VERY common in puppies, most outgrow it by 10 mths w/ no treatment. My vet prescribed Goodwinol ointment, to be applied 2x a day since my dog had a very minor case. It's diagnosed by taking a skin scraping of one of the spots and looking under a microscope for mites. My vet only found 1 live mite (the rest were dead).
have you also checked for fleas?