Noticed this bald spot on my cat today. It wasn't there when I woke then suddenly a few hours later it is. The skin looks red and raw. He's noy acting sick and it didn't seem to hurt him when I touched it. After looking at some photos of ringworm it looks similar but he's strictly indoors and not around any other animals so I don't see where he would have caught it. I did notice something sticky in his fur last night so I'm wondering if he maybe just chewed it out a little too hard?? Any advice???