What’s going on with my roosters comb ?

[Philidiip23]

I noticed a small crust spot starting on his comb a few months ago. It was the start of winter and due to the cold weather and my work schedule I decided to just keep my eye on it until the weather warmed up a bit, as I didn’t want to risk freezing his comb. The weather has started to warm up now, and when I got done my work rotation and got home I noticed it’s grown a substantial amount. I have a bachelor flock and he’s the only one who has it, so it hasn’t spread. What is it and how can I get rid of it ? I live in Canada so I have limited access to products unless I go to a vet (which I am 100% willing to do and have done for one of my other boys before).

 

[Chicken_tiger_catt]

maybe frostbite or something?
@Eggcessive

 

[Philidiip23]

maybe frostbite or something?
@Eggcessive

I don’t believe it’s frostbite. It usually happens on the tips first, though I do have one that does have frostbite. This is more of a crusty chunk. I was thinking maybe a fungal thing, and was thinking of trying to use anti-fungal ointment for a few weeks when I get back home from work again.

 

[Eggcessive]

It looks like an old injury. They look black at first then can turn this tan color before turning white. The flakiness looks like it is healing.