What is the cause of black scabs on a kitten’s nose?

When crusts appear on a kitten’s nose, consider: Firstly, whether the cat has been naughty and engaged in a fight with other cats in the household, resulting in a broken skin and the formation of a bloody crust. Secondly, whether the crusts are formed due to increased nasal discharge. Of course, some problems can be solved by isolation and medication, while others need to be diagnosed in hospital.