Jubilee had mud fever in the fall. I cleaned it faithfully and gave her medicine that the vet gave me. During the winter, it cleared up really good and disappeared. Now it's spring, and she doesn't have it, thank goodness, because it's been pretty dry here, but she does have old scabs on her back white sock, that are pretty big. I know they are old because they weren't bleeding or anything. When she had her leg injury a month ago (different leg) my barn manager gave her penicillin. I've heard that penicillin clears out mud fever bacteria. Do you think its the mud fever just coming out of her system? Because I think the scabs are just appearing because its flushing itself out. What do you guys think? Her forelegs are completely fine. Her other hind has a few tiny scabs that are just on the hair and not on the skin and come off easily. These scabs on her white sock are quite big (dollar size). They are black and crusty. To the untrained eye it just looks like caked on mud. What can I do to get rid of those scabs? Will they go away on their own? Or do I pick them off?