I would look at the area on an acupuncture chart and see what meridian they ref. Then I would address it that way....i.e. acupuncture point is the liver address the liver (milk thistle) and so on.
And put coconut oil on, vet wrap and yucky spray over that.
He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion. - Unknown