My big'un had a skin allergy that I found out later was due to lamb in his food. Struggled with that for awhile....he would lick spots on his abdomen and hind raw due to itching.
Used bena ointment in conjunction with the cone of shame for a month. I had to as when I wasn't home I couldn't deter the licking....even when he was crated.
At the same time I switched his food to chicken base and kept the cone until he healed (about a month).
My vet said lamb can be a common allergy? -Didn't know that.
Either way that was seven years ago and have never had an issue since.....
I was bathing him too much (several times per month) which was drying out his skin and creating Head and Shoulders dandruff. I didn't know any better. Now its no less than 4 weeks and no more than 6 for mine.
This may be different for your dog and was just what worked for us
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