I miss these forums! I can't wait till I get my laptop fixed, but it'll still be another month.
The spot seemed to be getting a little better on its own, until I put the frog in a small critter keeper to clean its tank. It didn't get done when I was planning so it spent more than a day in the critter keeper, and it rubbed against the sides a little. It didn't get much worse though.
Interesting thing...when I was cleaning the cage, I found a worm that was a few inches long...it looks kind of like the red worms we sell at work but I don't feed those...and I found some much smaller, much faster moving creatures. A friend who was helping me said they reminded her of centipedes. I don't know where they came from...it must have been from the moss that the seller gave me for free when I bought the frog, I think, but he's been in the tank for 2 months.