Hi. I think I've developed a wart on my left middle finger, but I'm not sure. There is a bright white circle with a tiny brown dot in the center that seemed to appear rapidly. I hadn't noticed it while looking at my hand the night before. It doesn't have a cauliflower appearance as far as I can tell, and it seems like my fingerprint does cross over it. Does this sound like a wart or something else? Is there something I can do to test for it? Thanks.