Yeast Infection in Ears not Gone - at what point do I become concerned?

[MARYDVM]

ketoconazole is one of the drugs used to treat valley fever, so there are lots of dogs in AZ on it. Most common side effect is stomach upset, and sometimes changes in coat color. Fluconazole usually has less chance of causing stomach upset. These drugs used to be horrendously expensive, and some pharmacies still mark them up quite high. If you find it to be much more than $45.00 for a month of ketoconazole or $65.00 for fluconazole I can give you the name of a compounding pharmacy in Phoenix that supplies these drugs at a reasonable cost.

[rotts and roses]

I just returned from seeing the vet with Ozzy and a yeast ear infection. I won't go into why they made me muzzle my docile boy just because he is a rottweiler .... but the vet said NOT to clean his ears with what another vet at the same hospital prescribed " vet solutions ear cleaning solution" it contains mostly water and that is what causes the yeast to grow according to her. He was put on Malotic which contains gentamicin sulfate,betamethasone & clotrimazole. Also oral antibiotics of amoxicap 500mg.
This sounds strange to me because in humans, don't antibiotics CAUSE yeast infections??

He has not been bathed recently and has no water in or near his ears, so I guess some rotties are just prone to yeast in the ears.Any way this vet swears by the med she prescribed so I guess we will just have to wait and see how he does.

[Knucklesmom]

No, antibiotics don't "cause" yeast infections. What happens is that the antibiotic, in the process of killing off the "bad" bacteria, also takes out the "good stuff" that keeps yeast in check in humans. Yeast infections in humans are technically an "overgrowth" of yeast that lives in our bodies. This kind of goes back to what I posted before about having a culture done - sometimes there is an underlying bacterial infection, as well as yeast growing out of control. Sounds like your vet is using a pretty broad spectrum of stuff, and it probably works in most cases. Hope it does the trick for Ozzy. I do agree that some dogs are just more prone to ear problems. I had a poodle-terrier that had the worst ears ever. I spent a lot of money on her ears - nothing - and I mean nothing - would work for any length of time.