Remember a while ago i think i told you about a recipe of sudocrem mixed with TEA TREE OIL (as much or ass little as you like) aplied to the icthy areas, sudocrem is a bit messy so you could mix it with vasiline, it wont do any harm at all, so it might help sooth it (it works wounders with our dogs).
Please try it, its cheap and i think effective.
Ky
PS I dont mean it will cure anything JUST SOOTH it