Comb starting to grow white stuff

[Wangcincay]

Hi everyone, i have been observing my hen's comb turning from normal red comb into something like this since she raised her first egg clutch (now pullets), can anyone tell me if it's normal or if it's a specific disease i should cure? also is this infectious? can i handle it bare hand? Thank you!

 

[nuthatched]

It might be a fungal infection, can you get anti fungal creams?

 

[Eggcessive]

Do you have a rooster, or could hens be pecking at her comb? What have your lowest temperatures been at nighttime? Frostbite is common during these months, and it could be healing frostbite.