Ask a Vet
A gray and white cat scratching and itching.

Cat Dandruff: Is It Something to Worry About?

Is cat dandruff an issue or not? Here's the scoop on why cat dandruff happens and how to handle dandruff in cats.

Dr. Eric Barchas  |  Aug 7th 2019

I have a 4-year-old indoor Himalayan/tabby mix who has cat dandruff on the back half of the top of her back. I was wondering what may be the cause of the cat dandruff and what treatment would help. She has had it since she was a kitten, but it pretty much only becomes obvious when I brush her or take her to the vet. My vet has seen it before, so it may not be something to even be concerned about? -Amber

First, what is cat dandruff?

An orange tabby cat being brushed or groomed by a human.

What is cat dandruff and is it something to worry about? Photography ©Aksenovko | Thinkstock.

Given that veterinary medicine even has a term to describe freckles in ginger cats — lentigo simplex — it should not surprise the reader that veterinary medicine has a term to describe severe dandruff: seborrheic dermatitis. I prefer to call it dandruff.

Is cat dandruff common? Why does cat dandruff happen?

Yes, cat dandruff is common. It occurs most frequently exactly where you have described: on the back, closer to the tail than to the head. This cat dandruff may be accompanied by greasy hair.

Most of the time, dandruff, even when severe, is not representative of a disease. However, some skin parasites (particularly one called Demodex) and fungal infections (such as ringworm) can lead to cat dandruff. So can glandular disorders such as hyperthyroidism, allergies to fleas or food, and even severe problems such as lymphoma. Some cats appear to respond to dermatological insults (such as exposure to chemical irritants) by producing dandruff.

What should you do about cat dandruff?

To be sure, you did the right thing by taking your cat to the vet. I hope that she did the appropriate tests to rule out those more serious problems. If she did, it is safe to say that your cat has a good, old-fashioned case of feline dandruff. That means two things. First, the problem will be hard to solve. Second, the problem isn’t a problem and it doesn’t need to be solved.

Cat dandruff is, in my experience, hard to treat. Some vets have touted success with dietary supplements such as omega-3 fatty acids. Others recommend special shampoos or spot-on therapies (specifically, I have seen some vets recommend Douxo Spot On or Alloderm). A few owners have reported success after changing their cats’ diets.

However, most people who have cats with dandruff end up frustrated. In my experience, the cat dandruff “problem” does not improve no matter what is done.

The final word on cat dandruff

I put “problem” in quotes for a reason. If your vet has ruled out serious skin disease, and your cat is not suffering from itching, hair loss or pain, then as far as your cat is concerned, there is no problem. Cats, unlike humans, don’t worry about first impressions. They don’t obsess in the mirror.

Since the dandruff isn’t bothering your cat, I recommend that you not let it bother you. Why risk gastrointestinal upset from a diet change, or an adverse reaction to a shampoo? The problem isn’t really a problem, so why not do nothing? Veterinary medicine has a fancy term for this as well: benign neglect.

Thumbnail: Photography ©chendongshan | Thinkstock. 

This piece was originally published in 2017.

Tell us: Does your cat have dandruff? What are your best tips for handling cat dandruff?

Read more about cats and skin conditions on