I have older post about this, but they never really did anything. I think this sounds like favus, at first I didn't really know, but now it has progressed. He has a few white spots and his comb is flakey and powdery. He is eating normal, doing his job, about everything a normal chicken does. I will get some pics of it tomorrow. Here are my questions 1.Should I quarantine him? 2.What do I need to do to prevent it from spreading to the flock? 3.How do I cure it? I have just started putting Nystatin on the comb and wattles. 4. Anything else I should know about this topic? Thanks you guys! Please Help because I am worried.