So I treated my rat Charlie about a month ago with Tylan for about 3 weeks because he had that RI signs (buildup around his eyes and nose). It seemed to have gotten better, but recently it's started again around his eyes. Now I'm thinking it's stress of some sort. I took him out tonight because he just looks like crap, my poor baby. I noticed under his fur he has these sores on his skin. They almost remind me of flea bites, but I didn't see any fleas at all? Now my other rat Lucky lives with him, and has remained unchanged through everything. I've never seen them fight, however Lucky is the dominant one. Could these sores be scratches or bites from fighting, and his eyes have the buildup from stress? I really don't know what to make of it, and getting Charlie to sit still to get a clear photo of the small sores is impossible. If this sounds familiar to anyone, please...I could use some guidance. He got a clear bill of health a month ago by the vet, so I don't know what else could be wrong