I have a 5 month old female standard poodle who is always scratching.
She is on advantage and shows no signs of fleas. The local vet gave her 25mg pills of hydroxazine that don't seem to help.
She does have an ear year infection and is being trested with Otomax.
She eats only Nutro puppy with some ground turkey or chicken occasionally.
She does spend a lot of time outdoors and is usually in the woodchips and I have had to take off two wood ticks.
Your pet may have an allergy.I assume your vet checked for fleas and mange. I recommend flea and tick control such as Frontline. The itch does not sound too serios since she is probably not damaging her skin. You can try oatmel shampoos and Benadryl 25-50 mg 2 X daily. Good luck, vetcare