I am going through this at the mo with my pup, but the vets wanted to rule out loads of stuff first.
- fleas
- mites (skin & ear)
- bacterial skin infection (small cut could get infected and start it off etc)
- yeast infection

Maggie had itchy skin and a rash on her tummy - I was convinced it was fleas, but couldnt find anything and we flea her regularly, so then we had to put her on a course of antibiotics for her tummy, which cleared it up but it came back. Next we had to bath her in this anti-fungal/anti-bac wash twice a week to see if that helped!!

Finally, when she was still scratching like mad they put her on a food elimination diet which she has been on for 4 weeks where she cant eat anything other than her new food - fingers crossed it seems to be working and we are off to the vet tomorrow to monitor progress!

I have loads of info and sites etc about allergies if you need it, so just post back if you dont get any luck with the food change!

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