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Thanks...I do need to know type/dose/how long.
And I hope they told you to watch your dog on ketoconazole because of liver issues.
The vomiting and diarrhea are the initial signs...it can cause gi problems and can be hepatotoxic (liver toxic) so they may mention after 2-3 weeks of use, the need to check the liver values.
And in my rush to respond...I never asked the breed and age of your dog...
I agree that a biopsy would be beneficial. The only other suggestion I have for you is that boxers are very prone to allergies and underlying food sensitivities so don't rule out chronic bacterial infections from underlying inhalational/food allergies.
Also antibiotics on the skin should never be done for less than 3 weeks. Two weeks is not a long enough time to treat skin.
Go for the biopsy.
I recommend putting the dog on Z/D food, starting antihistamines (Hydroxyzine) and DermCaps (Omega Fatty Acids)..then if it comes back bacterial...I would do Cephalexin (KEFLEX) 2-3 times daily for 3-6 weeks.
You have to remember...skin is the body's largest organ. It is one of the hardest to treat...and it takes twice the drug twice as long!!
Let me know how it goes.
Much like our vitamins...the quality depends on where you get it...you can look for the fatty acids at a petstore or vet office.
The Z/D is a synthetic protein dog food from the vet....it isn't fish/lamb/deer/etc. You start with that as a removal of aobut 95% of possible food allergens...you also stop treats...use it for about a month and then you can reintroduce proteins...like a fish and potato diet.
I wouldn't start anything until you talk with your vet...they may disagree on something...and remember I can't see your dog.
Well, I disagree with the food allergy issue because they come up at different times and your dog is a Boxer and 2 yrs of age!
I would do the z/d; I would request a month of hyroxyzine (antihistamine that is better than benadryl) and the omega fatty acids. For baths I would use a chlorohexidine based shampoo which helps kill both bacteria and yeast. Then I would see what happens within 30 days. It should total at about $85/month...but it is cheaper than $400. See if your vet will not let you "try" this...and let me know how it goes!