Isha, I feel your pain associated with the expense of allergy testing, but if you want a definite answer, you have to go through the testing in order to either eliminate the possibilities, or pinpoint the problem. Your vet is exactly right in his approach and he doesn't need to see all the areas your dog has chewed on to be able to come to the allergy conclusion that he did. Goldens do have a tendency to have allergies, among other medical issues. The causes are various. If you are living in a wet climate, it might be mold. If you feed her any people food such as chicken, it might be that,....basically anything could be triggering this. You might find someone online that had a similar problem and they can tell you what the culprit was. You can try what they did to resolve the problem and see if it works. But, short of that, anyone telling you they know for certain what it is will be a shot in the dark.
I am not a huge fan of long term use of prednisone. Short term use, it is a very good & useful drug for giving relief. As for long term use, it is a steroid and the potential for complications down the road as your dog ages isn't worth the risk to her health IMHO. Speak to your vet about using over the counter Benadryl as a test drug to see if it gives your dog any relief if you haven't tried it yet. Yes, it is the stuff that we use for ourselves that we can get at the drug store. You don't need a prescription from your vet. Talk to the vet regarding dosage recommendations for your dog at her weight level. Depending on her weight she might respond to one caplet. There is a rule of thumbe regarding how much per pound of weight, but this is something that you really should discuss with your vet prior to attempting. A simple phone call to him as a follow up to this problem won't cost you anything. If after trying the Benadryl the itching stops, you will know with certainty that what she has been experiencing is an allergic reaction. The problem then comes into play as to what exactly is triggering it and you will need to go through the testing.
If the Benadryl has no effect, then you will know it isn't an allergy. At that point, you need to look at a behavioral issue. Come back and let us know what the outcome is, and if it is a behavioral issue, we will try our best to help you.
