Can you describe what the spot is like...size, circular, location, skin color beneath it (as in does it appear irritated)? Or better yet, can you post a picture? (although being a newbie, that may not work well, may need approval
Looks like you were trying to post a picture, but it didn't come through. You say it's a bald, raw spot. Does it look like something your kitty licked raw? If so, he might need some antibiotics.