Maybe ask the vet to do a Culture and Sensitivity on one of the spots. Seems that if the AB works for a bit, he may need to be on it for a longer amount of time or a different AB all together. A C&S will tell exactly what type of bacerial infection is present and exactly which AB will be effective against it.
My GSD had a similar problem years ago. I don't remember which AB was used but it did clear it up completely. Some bugs are harder to get rid of than others. |