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Our cat is over grooming/pulling fur out on s back. We find…

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Our cat is over grooming/pulling...
Our cat is over grooming/pulling fur out on his back. We find clumps of hair on the floor but never see him do it. One spot is almost bald.
Submitted: 2 years ago.Category: Cat Veterinary
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Answered in 10 minutes by:
3/6/2016
Cat Veterinarian: Dr. Kara, Veterinarian replied 2 years ago
Dr. Kara
Dr. Kara, Veterinarian
Category: Cat Veterinary
Satisfied Customers: 18,598
Experience: Over 20 years of experience as a veterinarian.
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Hello, my name is***** and I have over 20 years of experience as a veterinarian. I'm really sorry to hear about Midnight's hairloss and excessive grooming of his back, which has not improved even with bathing and the use of fish oil.

The most common reason for these symptoms is flea allergy dermatitis. Flea allergy dermatitis is horrible. If you don't see any fleas you might not have a huge population. And in allergic cats there doesn't need to be many, it only takes one bite a month for an allergic cat to itch like crazy. If you have other pets who aren't itchy they may not be allergic. Ideally I recommend topical flea products be applied every 3 weeks during the summer/fall months in an allergic cat when fleas are at their peak, or with a active problem, and then monthly as a prevention. Fleas can thrive even in the winter in warm secluded areas like where he sleeps. Many over the counter products have a problem with fleas being resistant and some can be down right dangerous. I never recommend any products that Hartz or Sargent's make. I recommend Advantage II or Frontline Plus, or the new Seresto Flea collar. I don't normally recommend flea collars, but this one really works and lasts for at least 6-8 months. All of your pets must be treated as if you don't the nonallergic ones serve as a flea reservoir for the allergic one and you'll never solve your problem.

Inhaled allergies (to pollens, dust mites or mold spores) are another possibility.

To control allergic symptoms you can try:

1) Benadryl (diphenhydramine only, the combination products with decongestants and acetaminophen are toxic to cats) at 1mg to 2mg per pound of body weight every 8 hours. That's a half of 25mg tablet every 8 hours for a cat that is 8 to 15 pounds. Benadryl is very bitter tasting and some cats will drool excessively or even vomit after a dose because of the taste. If that happens just try another antihistamine.

OR

2) Chlorpheniramine at a dose of 4mg per cat twice daily.

OR

3) Zyrtec (Cetirizine hydrochloride) at a dose of 5 mg per cat given orally every 24 hours. Make sure it is NOT the formulation with a decongestant (such as Zyrtec-D) because cats cannot tolerate decongestants.

Combined with high doses of omega-3 fatty acids antihistamines work to relieve his itchiness, so continue the fish oil pearls. I recommend a dose based upon the EPA portion (eicosapentanoic acid) of the supplement as if we do that the rest of the supplement will be properly balanced. Give him 20mg of EPA per pound of body weight per day. For example an 8 pound cat could take 160mg of EPA per day.

Antihistamines and omega-3 fatty acids work synergistically, better together than either one alone. These should help reduce the itch. Be aware that antihistamines can cause drowsiness or hyperactivity which should resolve with continued use.

Food allergy is another reason for excessive grooming. You might wish to try a hypoallergenic food for 8 weeks or so. My suggestions are Hills Z/D or Royal Canin Duck and Green peas. He will need to eat only that food, no other treats or foods during the food trial.

Full or impacted/infected anal glands can also lead to excessively grooming near the lower back and tail base. If there are other cats around that he doesn't get along with perhaps this is stress related. If so a product called Feliway, which is a synthetic version of a calming feline pheromone, may help. You can purchase this from petstores or online.

You can add oral calming supplements like Rescue Remedy drops for pets, or Zylkene.

Other outside parasites like Cheyletiella or sarcoptic mange are possible causes as well, although both are highly contagious, so I would expect your other kitties, if you have them, to get itchy too eventually.

If he were an older fellow spinal arthritis could also cause these symptoms, but at 4 years he is a bit young for that.

For now I would start with continued flea control, an antihistamine and omega 3 fatty acids. If he's not significantly better in 2 weeks then it's time for a veterinary examination to look further for problems such as mites or full anal glands,and/or a hypoallergenic food trial.

Please let me know if you have further questions by replying to this post.

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Customer reply replied 2 years ago
This does not help much but here is some more information. We have only Midnight in our household - no other animals and he is an inside cat. Very seldom is he outside; only when he sneaks out and we bring him right back in.
Cat Veterinarian: Dr. Kara, Veterinarian replied 2 years ago

Thanks very much for the further information.

Although he is indoors only he may have picked up fleas on his quick trips outside. If he doesn't have a huge population, and he is "eating the evidence" as he grooms himself it may take a while for you to ever see a flea.

If he's an only fellow stress from other pets is unlikely, but outdoor strays or wildlife can be a source of stress, and so can boredom.

With his lifestyle though my thoughts would be either:

1) anal gland problems (infection, impaction, full glands)

2) indoor inhaled allergies (dust mites, mold spores)

3) possible food allergy

Perhaps a hypoallergenic food trial could be done for 6-8 weeks to see if he responds at all.

Or you could try adding an antihistamine (I'd pick Zyrtec to try first) to his omega 3 fatty acids and use a flea control product just in case.

Have his anal glands checked.

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Cat Veterinarian: Dr. Kara, Veterinarian replied 2 years ago

Hello, I wanted to check in and see if you had any further questions after reading my response. If you do please feel free to respond with them. If not and you found my information helpful please remember to rate my response positively so I may receive credit for my work thank you, ***** *****

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