What’s wrong with black scabs on the nose of a kitten?

This situation may occur in the nose of kittens: firstly, as kittens are naughty, so they may fight with each other and scratch. Sometimes this will scratch the cat around the nose or face and a black crust will form while the wound is healing. Secondly, there may be a high level of nasal discharge that is not cleared in time, causing the discharge to form a crust on the nose. There may also be a condition such as a skin lesion that needs to be brought to hospital for diagnosis.