What is this crusty mark on my cat's nose? Should I be worried?

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly an infection. However, this is a somewhat common location for a tumor in cats as well. I still think that a focal infection or traumatic lesion is more likely. You can use a topical medication like Douxo 3% PS pads which you may find online. You can apply this to the affected area twice daily for 2 weeks. If this does not resolve or appears to be progressing, have Lovey evaluated by your veterinarian for further assessment and treatment. Good luck and have a great day!

Thanks for reaching out! That area does not appear abnormal. It may be that she scuffed a small amount of hair off or had a scab that fell off. The skin looks very normal and healthy. I would just monitor it for changes in color, itchiness, or if it begins to progress and notify your veterinarian if so.

The crusts are caused by the nose running just a little, then it mixes with skin cells and bacteria or yeast to turn brown. Some cats can have a low-grade chronic upper respiratory infection to cause it. In some of these cats, a supplement called lysine can help (see link below). If the skin under the crusts appears normal, then I would just continue to clean gently with a warm wet washcloth daily. https://www.amazon.com/VetriScience-Laboratories-Vetri-Lysine-Bite-Sized/dp/B002ALE9RM/ref=sr_1_1?dchild=1&keywords=lysine+treats&qid=1602343461&sr=8-1

It's probably dried up mucous discharge which is typically caused by a runny nose. Monitor Luna for continued nasal discharge after initially wiping this away with a warm moist cloth. If she continues to have discharge and other signs of an upper respiratory infection (sneezing, congestion,or runny eyes)then it is best to have her evaluated by your vet and treated with oral antibiotics.

This can be seen in a few different cases, but I always worry about skin cancer in white cats, so it's best to have it checked out by your veterinarian. I have seen similar lesions when they rub their nose on something, or with certain infections, so I would not be too worried; just have it checked to be safe. It's not an emergency, but good to have her seen in the next week to ensure treatment is initiated early if it's something serious. For now, I do not recommend doing any sort of treatment at home. It's best to leave it alone until a vet can have a look. Here is a link with more information about skin cancer in cats: https://vcahospitals.com/know-your-pet/skin-squamous-cell-carcinoma-in-cats I hope that helps and all is well with Lily.

It is difficult to tell from the pictures exactly what could be going on. However, crusty skin lesions can be due to parasite (skin or mite) infections, bacterial infections or even fungal infections. Your veterinarian can perform a skin scraping to determine the cause of the crustiness and prescribe appropriate treatment.

It looks like he may have a dermatitis on his nose which could be secondary to a bacterial infection, trauma, allergic reaction, or possibly a fungal infection. He should be examined by a vet to determine the cause. Your vet can do a culture, if needed to help diagnose.