It began as mysterious swelling on her front left cannon with no lameness whatsoever. So I began cold- hosing and then applying a standing wrap. I made sure her leg was completely dry before wrapping the standing wrap. That reduced the swelling within two days, so I didn't wrap that night, swelling returned the following day, so I resumed the wrapping. Noticed a small amount of 'gunk' on the back of her cannon, thought it was maybe residue from the liniment I put on it once. That patch of yellowish crusty gunk has now grown to a tender patch that is red, scabby and crusty. Betadine has not killed it or helped at all. Neither has MTG. She gets a medicated shampoo once a week for other, previously assumed unrelated, skin issues she's had on and off since I got her in February. She gets scrubbed head to toe, so that spot would have been treated with the Betadine shampoo. Here's the best picture I could take. More than willing to get the vet out if necessary, but if anyone has any thoughts, they'd be greatly appreciated. Thanks!