Cat with crusty areas.

Dr. Marie replied:

Sorry to hear that Oppermann is having problems!

What a frustrating situation! I wish you were able to find out what it was that the vet found the first time. In my area (Canada) mites are relatively uncommon in cats. In fact, other than ear mites, I am not sure if I have ever diagnosed mites in a cat.

In some parts of the world a parasite called Demodex can affect cats. You may want to ask vets in your area if Demodex is a common problem.

There are a number of other possibilities. It is possible that your cat has some allergies. If so, having the vet prescribe steroids may help. Switching to a hypoallergenic food if one is available for you is a possibility as well.

It could be that there is skin infection in these areas in which case she would need antibiotics.

Sometimes black debris can be flea dirt. Take some of the black debris and put it on a white paper towel or piece of paper. Then, put some water on it and see if you can get it to smear and make a rusty color. If so, this is flea dirt.

If this were my case I would likely be applying a good flea prevention product such as Revolution as this would kill many other parasites including certain mites as well.

Chin acne can cause black crusty areas on the chin but shouldn't affect the anus and the rest of her coat.

I hope everything is ok!

Dr. Marie.

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