One of our geldings has had this developing on his heels for several days now, and it is getting worse. At first I thought it might be from to much mud and water but it's mostly dry here now, and none of the other horses have it, which makes me suspect an allergy or poisoning of some sort. It's only on his feet which have socks, and his skin is almost just drying up and crumbling off. I have put swat on it to try and help with the flies but I don't know what else to do with it. Has anyone seen this before/ know how to treat it? Thanks in advance.
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