I have a silkie roo I discovered has a nasty sore on top side of his head. It has white flakey skin around the sore. I can't tell if it's from trying to heal or if it is from fungus. Both eyes and earlobes are swollen. More on the sore side. I plan on putting betadine salve on it and segregating him. But any added advice would be appreciated. Has anyone had something like this before?