I just had my Pacman frog for 2 weeks. I bought him from a prominent pet store. He was only 1.5 in long when I got him but now he's probably 2 in. He's been doing pretty well until tonight.
I just saw a blister on his skin just right above his right arm. The blister feels like there's only air inside like a bubble. He also doesn't seem to feel any pain when I touch it.
He still behaves normally but this blister is obviously something to be worried about.
I feed him cultured crickets and superworms everyday, lightly dusted every other day. I also change his water (mineral) every other day or every 2 days.

Here are the photos. Pardon the quality.

Name: 2012-10-25 00.38.37.jpg Views: 1573 Size: 64.4 KBName: 2012-10-25 00.39.14.jpg Views: 1470 Size: 67.2 KBName: 2012-10-25 00.42.33.jpg Views: 1524 Size: 49.6 KBName: 2012-10-25 00.43.14.jpg Views: 1533 Size: 57.5 KB

Oh please please help me figure out what caused this and what I can do as a solution.
My guess is he got bitten or something...