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What Are Cat Colds: Kitty Shnorkles & Resorptive Lesions

by | Apr 2, 2025 | Cat Behavior & Care | 8 comments

We call them cat colds, and they can make our pets feel miserable. Even my dear little old lady cat, Seren, had a bout with an upper respiratory infection back in the day. I hope you can learn something helpful from this older post about Seren-Kitty (she lived another five years and nearly made it to age 22!)

Seren 002

This month with spring trees flowering has turned up the rate of human sneeze attacks, and pets are not immune. But none of my pets had ever had problems before until Seren began sneezing.

What I thought must be a transient allergic reaction in Seren turned into a summer “kitty cold” that had her waaaay under the weather. At the time, she was sixteen, so she had me very worried since those old-lady-cats tend to get sick quicker and take longer to recover. Cat colds not only make pets feel miserable, but they can also be a sign of a wide range of health problems.

For more information about dog colds and dog coughs, see this post.

What Are Kitty Colds?

Upper respiratory infection, caused by several different “bugs,” often affects cats. Some of these are related to the common human cold virus (a herpes virus), but people don’t catch colds from their pets (or vice versa). Cats catch URI from other infected cats, and the agents that cause kitty congestion usually aren’t lethal in adult cats. They can be caused by viruses or bacteria and rarely fungus, leave the cat with crusty nose and eyes and even painful mouth and eye ulcers. Yuck! Another problem is if the nose gets stopped up, kitties won’t eat unless she can smell her food, so sick felines potentially can starve if they get a stopped-up nose.

Seren’s Sneezles & Upper Respiratory Infections

Seren’s sneezles started out with bursts of three or four at a time over a period of two or three days–and then seemed to go away. But over a period of five or so days, I noticed one eye seemed to water a little with a bit of clear drainage on that side of her nose—and then THAT seemed to go away.

But the next weekend, bam! The eye still watered clear tears, but her nose (on just that side) clogged with cloudy “schtuff” that choked her when she tried to eat or drink. Of course, she came down with the “shnorkles” over the weekend when my regular vet was closed, but first thing Monday morning, we visited the veterinarian.

…but No History of URI

Kittens that become infected with URI often have recurrences throughout their life during times of stress. Proper vaccinations can prevent infection altogether, or (depending on the causative agent) reduce the signs of illness if the kitty does get sick. Seren had all of her vaccinations as a kitten, and yearly thereafter received the standard “boosters” up until she was about eight years old. At that point, I followed the advice of feline vaccine experts Dr. Ron Schultz and Dr. Richard Ford (gathered from personal interviews for some of my books), who stated by age four after regular boosters the healthy cat without exposure to other cats usually should have virtually life-long protection.

So since she’d never had issues, was an “only cat” and indoors exclusively without exposure, I continued her “wellness exam” vet visits (VERY IMPORTANT!) but I stopped vaccinating her except for rabies (required by law). Did this put her at risk for infection? Have these experts changed their opinions? Do I need to re-think this? Perhaps.

Seren’s Treatment for her Cat Cold

So, what was Seren’s treatment? At the time, as an “only” cat, she didn’t have contact with other kitties, so how did she catch cold? Be aware that “bugs” can be carried to your pet on your hands or clothes (or from the dog!) from contact with viral or bacterial agents. Did our then-dog Magic make her sick by roaming our property and tracking in something from the environment?

The veterinarian suspected a couple of things that in combination seemed to have conspired to make Seren sick. First, the eye/nasal discharge was only on one side so it might be an infected tooth. Sure enough, the affected side of Seren’s gum was quite inflamed. Oh no! Maybe she’d developed a resorptive lesion, described in my Aging Cat book and in the great video, below.

Allergic Reaction?

But she didn’t have a temperature (thank goodness!), so the vet thought it might also be a nasal infection that started from an allergic reaction. We had recently changed cat litter, and the new product had a much stronger aroma and dust associated with it than the previous product.

The doctor explained that the nose is the perfect “petri dish” for infections to brew, being moist and warm, with ample opportunity to sniff in foreign material. A conservative treatment was recommended, and Seren given an injectable long-lasting antibiotic and a steroid-type drug (that lasts 4-6 weeks) to counter the inflammation, while we monitored how she reacted. Thankfully, Seren responded very quickly and within five days was back to her loving, dog-pestering self!

What You Should Do for Cat Colds

Only your veterinarian can diagnose the cause of your pet’s discomfort and prescribe the best treatment. You can relieve symptoms with these cat cold tips.

Preventive vaccinations can help protect cats from these common illnesses. If you share your life with more than one cat, or interact with other cats outside the home, show cats, or otherwise there are exposure opportunities, re-vaccination as advised by your vet is vital. Today the recommended interval for boosters is every three years, although Drs. Ford and Schultz have stated that immunity may last 5 to 8 years–but you don’t know which pets have longer or shorter duration of immunity.

I love hearing from you, so please share comments and questions. Do you have an ASK AMY question you’d like answered? Do you have a new kitten and need answers? Stay up to date on all the latest just subscribe the blog, “like” me on Facebook, and sign up for Pet Peeves newsletter.

Stay up to date with the latest book giveaways and appearances related to my September Day pet-centric THRILLERS WITH BITE!  Amy Shojai, CABC is a certified cat & dog behavior consultant, a consultant to the pet industry, and the award-winning author of 35+ pet-centric books and Thrillers with Bite! Oh, and she loves bling!

8 Comments

  1. Wayne Borean

    Poor Seren. When Kitties get older, they do tend to suffer. Even the littlest things can make them miserable.

    Give her a hug for me.

    Wayne

    Reply
    • Amy Shojai

      Thanks Wayne. She’s feeling a weeee bit better today. I got her some Lysine supplements (kitty treats) and don’t know if that’s the trick, or she’s just finally starting to shake the virus.

      Reply
  2. Patricia

    I have always vaccinated my cats each and very year with all their shots along with getting their annual wellness exam. Having 3 inside and 2 outside, I always felt better at doing that just in case the inside ones caught something from the outside ones and vice versa. We have been so lucky that all have been healthy except when Macy had her URI/asthma spell. She is fine now. If only we can keep those kidney crystals under control we will have it made. It was by far not easy but we have got her on Hill’s Science Diet for bladder health now per vet suggestion and no flareups in about a month. The only problem is it’s very expensive. Any suggestions on where I can find this cheaper? Speaking of Seren and her sneezes I had an inside cat that lived to be 19 1/2 and starting at about age 11, he started sneezing every day and had what looked like a bump come up on his nose. We went to the vet and they thought allergies. The bump did not go down and then they thought maybe a little tumor or foreign body. It never seemed to bother him – just sneezing. IT WORRIED ME. The local vet sent us to Dallas to see a vet by the name of Dr. Garfield (I know that’s hard to believe). He inserted a tiny needle on top of his nose to see if any kind of liquid or cells could be drawn out to find out what it was. Nothing definitive – never knew what it was. He lived another 8 1/2 years, was in no pain but sneezed every day. I often thought maybe he was wrestling with his brother and hit his nose and it made a bump. So glad Seren is feeling so much better – give her a hug from me. Great blog his week.

    Reply
    • Amy Shojai

      Patricia, I would also vaccinate every year if I had your situation. So glad Macy’s crystals are under control. And that’s great news about the cytology results on your kitty’s nose. Yep, sometimes it’s just a mystery.

      As for lower cost options for Macy’s food–have you checked into the Pet Food Direct? They’re one of my affiliates (link box on the right side of the blog). I don’t know what the savings might be but worth a look.

      Reply
  3. Andrea

    Amy, you made me laugh in spite of the serious topic. I certainly hope Seren had a “temperature”! But I’m glad she didn’t have a “fever” 🙂

    I vaccinate my adult cats on a three year schedule, even the older ones because some of them go to shows. Otherwise I’ve wondered if a lone cat could go without any more vaccs after a certain age. One of my vets thought so too. But, not in my household as it is now.

    Great topic!

    Reply
    • Amy Shojai

      Uhm…well, yeah. *s* No fever, and a normal temp. LOL!

      Reply
  4. Jane

    Thank you, Amy- as a veterinarian I can say you are spot-on 100%-cat colds and dental disease is so common. Your information is SO important for our kitties- thank you for underscoring the importance of veterinary visits!

    Reply
    • Amy Shojai

      Thanks Dr. Jane, that means a lot coming from you. Our pets rely on us to get ’em to the doctor…they can’t drive themselves (although Magical-Dawg would like to try!).

      Reply

Trackbacks/Pingbacks

  1. Cat Colds: How to Cure Cat Colds & Upper Respiratory Congestion - […] Cat colds are one of the most common health problems of kittens and adult cats. Feline upper respiratory diseases…
  2. Pet Insurance: What You Need to Know to Choose Insurance For Pets - […] scared me when 17-year-old Seren had another schnorkle flare up and stopped taking her Lysine treats that help ward…
  3. Lightweight Litter Saves Your Back - […] About 2 weeks after changing the litter, Seren-Kitty developed the the “sneezles”— an upper respiratory infection. At the time,…

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