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					Originally Posted by gracielove  I agree that a second opinion would be in order. Does he itch or seem disturbed by the skin problem? It is highly unlikely to be a burn unless you keep your dog in direct sunlight for long periods of time...which I doubt. And how often do you have chemicals spilling on your dog? Never, I would hope. 
 The fact that it is spreading is concerning.
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  This is an old thread...although the latest post before yours was new.