Is it avian pox?
Does anyone know what is happening to her?
Can it be treated?
I dont know much about chicken comb issues but could it be frostbite?
Has she been mated with?
My hens get bruises up and down their combs and even scabs. This might be out of the ordinary that the bruises appear his badly, but it might be the problem!
If you have a rooster, then don't worry about it. If it is Frostbite, one it has to be a good amount of cold to get it on their rough combs, and second, you can
use coconut oil to prevent anything like that on the combs.
Exactly HOW cold has it been getting recently?