Nasal Dermatoses in Cats
Many diseases affect the skin on the noses of cats. This can include bacterial or fungal infections of the skin, or mites. These diseases may affect the bridge of the nose where there is hair, or the smooth part of the nose, where there is no hair. Often, it is the portion of the nose that has hair that is affected. In the case of systemic diseases like lupus or other autoimmune ailments, the whole muzzle is involved. Some systemic diseases cause the part of the nose where there is no hair to lose its pigment or develop ulcers.
A rare condition caused by the sun, called solar dermatitis, also affects the areas of the nose not covered by hair. That area may become inflamed and even ulcerated. Most of these conditions are more likely to occur in kittens under a year of age, but skin cancers are more likely to occur in older cats.
Symptoms and Types of Nasal Dermatoses
There are many different symptoms that may be seen in cats affected by nasal dermatoses, among them:
- Ulcers/nodules on skin
- Loss of hair (alopecia)
- Eruptions that have pus
- Loss of pigment
- Excess of pigment
- Redness of skin
- Crusts (scabs)
Causes of Nasal Dermatoses
Some factors or diseases that may cause nasal dermatoses include:
- Nasal lesions with pus
- Nasal solar dermatitis
- Immune-system disorders
- Connective-tissue disorders
- Zinc-responsive scaling and crusting of skin
- Sensitivity to certain substances, including certain drugs
Diagnosis of Nasal Dermatoses
Your veterinarian will take samples of skin from your cat’s nose to culture for bacteria and fungi. Biopsies and immune system tests will also be conducted.