I posted the same question a year ago and got a lot of good advice. You might check it out. Eddie scratches less now, but I'm not sure what did it. We changed his food, we put him on missing link, and we changed his shampoo.
http://www.yorkietalk.com/forums/showthread.php?t=25083
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Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP).
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