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My coton scoots, chews her paws, scratches her ears and chin

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constantly. Vet says allergies. Her...
My coton scoots, chews her paws, scratches her ears and chin constantly. Vet says allergies. Her only relief was with prednisone and itching resumed when it was gone. Seems to be systemic. Suggestion?
JA: I'm sorry to hear that. Using the wrong medication for fleas can be dangerous. You should definitely talk to the Veterinarian. What is the dog's name and age?
Customer: She takes Trifesis for flea control, which was recommended by the vet. Metta, 5 years old.
JA: Is there anything else important you think the Veterinarian should know about the dog?
Customer: Food allergies have been ruled out. Benedril and Zyrtec were suggested by vet but not effective. Site is Stella & Chewies Venison, fruits and vegetables.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Veterinarian about your situation and then connect you two.
Submitted: 1 year ago.Category: Dog
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Answered in 14 minutes by:
6/18/2016
Dog Specialist: Dr. Kara, Dog Veterinarian replied 1 year ago
Dr. Kara
Dr. Kara, Dog Veterinarian
Category: Dog
Satisfied Customers: 17,111
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 am sorry to hear that Metta is miserably itchy even with using flea control medication and a trial of Benadryl and Zyrtec.

Allergies are the most common cause of itchy skin and can give him a skin crawling, all over itchy type effect which many dogs find irritating. Coton De Tulear as a breed have a high incidence of allergies. I'll give you an allergy rundown of likely causes for skin troubles. She may have more than one allergy given how symptomatic she is now. Dogs that have one allergy often develop several with time. The effect of multiple allergies aren't additive, they actually compound one another.

Even if you don't see fleas I do recommend using protection, so I am glad that you have started with flea control. Flea bite allergy is the most common allergen and it only takes one bite a month to make an allergic dog scratch so I recommend using flea prevention even if you never see one again. Frontline Plus, Advantage II or Advantix are excellent as is Trifexis. Don't use over the counter products, especially Hartz or Sargents, as most are ineffective if not toxic. Unfortunately even after the fleas are gone the allergic reaction can continue for weeks and I will discuss controlling that reaction below.

Other allergens can be inhaled (like grass pollen, dust mites or molds).

Both inhaled and flea allergies respond well to the anti-inflammatory effects of Prednisone. Unfortunately the side effects of long term steroid use, (diabetes, secondary bacterial, yeast and demodex infections, kidney and liver damage, thin skin ect) make them unacceptable to use long term.

You can use a combination of antihistamines and high doses of omega-3 fatty acids to help with the symptoms of flea an inhaled allergy. In combination fatty acids and antihistamines work synergistically, much better than either one alone. If her symptoms worsen seasonally I would think that inhaled allergens are a part of her problem. I know that you've tried Benadryl and Zyrtec but I want to make sure that the dose was high enough, and if so then I'll give you other options.

You can try:

1)Benadryl (diphenhydramine only don't use the combination products with acetaminophen or decongestants as they can be toxic for dogs) at 1mg to 2mg per pound of body weight or one 25mg capsule per 15 to 25 pounds of body weight orally every 8 hours.

OR 2)Claritin (loratidine) at 5mg per 25 pounds of body weight once or twice daily.

OR 3)Hydroxyzine at 1mg per pound of body weight orally every 8 hours.

OR 4) Chlorpheniramine at 4mg to 8mg per dog once or twice daily.

OR 5) Zyrtec (Cetirizine hydrochloride) at 1/2 mg per pound of body weight orally every 24 hours. That would be one 10mg tablet per 20 pounds of body weight. Make sure it is NOT the formulation with a decongestant (such as Zyrtec-D) because dogs cannot tolerate decongestants.

Some dogs do better on one antihistamine rather than another. Give the one you pick a week trial and if it isn't working try another. Be aware antihistamines can cause sleepiness or hyperactivity in some dogs. These side effects do wear off with repeated use.

Omega-3 fatty acids are fish oil products. 3V by DVM or Derm Caps ES are good brand name products. Use the high end of the dosing schedule for your pup's weight. 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 her 20mg of EPA per pound of body weight per day. For example an 8 pound dog could take 160mg of EPA per day.

Cool water baths with an oatmeal shampoo or chlorhexiderm shampoo (which is antibacterial and antifungal) and a conditioner with an antihistamine may help. The water rinses off allergens and the cool temperature soothes itchy skin. Do not bathe her for 2 to 3 days before or after applying any topical flea control products or the bath will interfere with the product's efficacy.

How was food allergy ruled out? It is often found in combination with inhaled allergies. Food allergy seems very possible with her as well if she seems to be itchy all year round. Dogs with food allergies tend to lick and scratch their paws, face and ears the most, but any of the "allergy reactive areas" can be affected. Given where she is itchy food allergy seems possible to me. Dogs can develop allergies to any protein or carbohydrate so even if she is only fed one thing that can be what she is allergic to. There are no food items that are "hypoallergenic", the key is to feed only things her body hasn't been exposed to. She cannot be allergic to what she's never been exposed to.

If you choose to evaluate her for food allergies make sure that the food that you put her on is a true hypoallergenic diet. The trouble with "limited ingredient" or "low allergy" pet store brands is that the same machinery is used on multiple lots of food without sterilization cleaning in between. So for example even if a food says it has salmon and rice if the previous batch had beef and corn then you will get traces of those ingredients in your bag of food. Not a big deal if your dog isn't allergic but a waste of money thinking that the food was hypoallergenic and not good for your dog if those happen to be allergens for your dog. The veterinary brand true hypoallergenic foods are more expensive because it isn't cheap to thoroughly remove all traces of a previous food mixture from the machines used to process food.
Generally what I recommend is trying to clear the skin with a true prescription hypoallergenic diet, and then adding one food item (chicken, beef, corn wheat etc) every month to see what they react to. Then we can find a regular food without the ingredients she reacts to to try. As far as permanent diets I do tend to stick with Purina Pro Plan brands or Nature's Recipe as I find those rarely if ever have cross contamination. Purina Pro Plan Turkey and Barley or Nature's Recipe Vegetarian or Venison are pretty good products. I know that this isn't easy from personal experience (my dog is allergic to wheat) and it is time consuming, but worth it.

If you choose to try testing/treating her for a food allergy I recommend that you try a true hypoallergenic diet like Hills z/d or Purina Veterinary Diets HA. No treats, flavored medication or bones while on the diet and it must be used for a least 12 to 16 weeks to see the full effects. You should see some improvement in 6 to 8 weeks.

Another option if the antihistamines and omega 3's aren't enough is a product called Atopica. It suppresses the immune system a bit so it decreases allergic symptoms but it doesn't have as many harmful side effects as systemic steroids.

Another option is a brand new drug called Apoquel (generic name oclacitinib) which interferes with the allergic pathway. It works very quickly to stop the symptoms of an allergy. Most dogs are reported to be much more comfortable in a day or so. Unfortunately it is on limited order now due to overwhelming demand, but it is becoming more available so is something to keep.

If you are interested discuss these medications with your veterinarian as they are prescription products.

Another option if you are interested, is trying immunotherapy. Your girl would need to be tested to determine exactly what she is allergic to, and then she is given small amounts of the allergen to build up her tolerance to it, increasing the amount of allergen in the injection incrementally so that her immune system no longer responds to it. This isn't a quick fix, it takes time to slowly build up their tolerance and as she develops new allergens things may need to be added, but it is an option.

If it's been a while since her last exam parasites like cheyletiella, demodex or sarcoptes mites or secondary bacterial or yeast infections should be looked for by your veterinarian as well if she isn't improving as they can lead to very itchy skin.

Please let me know if you have any further questions.

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Dog Specialist: Dr. Kara, Dog Veterinarian replied 1 year ago

Hello, I wanted to make sure that you didn't have any further questions for me, and I'd like to know how things turned out for your pup. If you could give me an update that would be great, thank you, ***** *****

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