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I have a 6 year old lab who has allergies i give him 2 claritan

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hi i have a 6...
hi i have a 6 year old lab who has allergies i give him 2 claritan a day and he gets a shot every 3-4 weeks of a steroid he is still itching and has brown spots on his hine legs and bottom he is miserable can you help?
Submitted: 2 years ago.Category: Dog
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7/23/2015
Dog Specialist: Dr. Kara, Dog Veterinarian replied 2 years ago
Dr. Kara
Dr. Kara, Dog Veterinarian
Category: Dog
Satisfied Customers: 17,112
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 your fellow is itchy and has developed brown spots even with the use of Claritin (loratidine) and steroid injections. I suspect the brown spots are signs of a skin infection due his chronic itchiness and poor skin health due to allergies. Skin infections make them even itchier, thus will contribute to him scratching more.I am not a fan of using repeated steroid injections to try to control allergies as steroids have many side effects (kidney and liver disease, predispose to muscle weakness and developing diabetes, suppress the adrenal gland's natural function, immune system suppression gastrointestinal upset and weight gain) and as you have seen over times they tend to lose their efficacy.Normal looking, but itchy, skin means that the stimulus to scratch is coming from internally rather than a response to an external irritant. That usually indicates an allergy of some type.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. I'll give you an allergy rundown of likely causes for skin troubles. He may have more than one allergy given how symptomatic he 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. Flea bite allergy is the most common allergen, dogs with flea allergies often tend to be itchiest at the tail base/rear back, 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. 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). You can use a combination of antihistamines and high doses of omega-3 fatty acids to help with with the symptoms of flea bite and inhaled allergies. In combination fatty acids and antihistamines work synergistically, much better than either one alone. If his symptoms worsen seasonally I would think that inhaled allergens are a part of his problem.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. I know this is what you are using now, but I wanted to make sure the dose was correct.OR 3)Hydroxyzine at 2 mg per kilogram 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 mg per kilogram of body weight orally every 24 hours. That would be one 10mg tablet per 20 kilograms 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 him 20mg of EPA per pound of body weight per day. For example an 80 pound dog could take 1600mg 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 your fellow for 2 to 3 days before or after applying flea control products or the bath will interfere with the product's efficacy.Food allergy is very possible with him as well if he seems to be itchy all year round. Dogs can develop allergies to any protein or carbohydrate so even if he is only fed one thing that can be what he is allergic to. 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.Make sure that the food that you put him on is a true hypoallergenic diet if you choose to go through a diet trial. 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 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 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 him 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. He sounds like a very good candidate for this given his chronic allergies. Some dogs do experience nausea on this drug, but if we back off on the dose and increase it gradually they usually can take it.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 inhaled allergy, but does NOT work for food allergies as those are stimulated via a different allergic pathway. Most dogs are reported to be much more comfortable in a day or so. Unfortunately it is on backorder now due to overwhelming demand, but it is something to keep in mind for the future if he continues to have trouble.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 fellow would need to be tested to determine exactly what he is allergic to, and then he is given small amounts of the allergen to build up his tolerance to it, increasing the amount of allergen in the injection incrementally so that his immune system no longer responds to it. This isn't a quick fix, it takes time to slowly build up their tolerance and as he develops new allergens things may need to be added, but it is an option. If it's been a while since his last exam parasites like cheyletiella, demodex or sarcoptes mites should be looked for by your veterinarian as well if he 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 2 years ago
Hi,

I'm just following up on our conversation about Coby. How is everything going?

Dr. Kara
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