Need some help

I just fed my albino a large mouse and I checked on him to make sure it was going down okay. Then I noticed a rather large abscess looking knot on his neck. Im fairly certain that it was not there when I went to feed him ( he only eats live by the way). So my question is could this be a bite or scratch from the mouse or something entirely different? I'll post some pics as soon as I figure out how.

[IMG]http://i359.photobucket.com/albums/o...psomxjzba2.jpg[/IMG]

http://i359.photobucket.com/albums/o...psuzbrxbel.jpg

http://i359.photobucket.com/albums/o...psbyhqsuc1.jpg

I would keep an eye on it to see if the swelling goes down over a couple of days.

Yeah That doesn't really look like a scratch or bite to me.

I didn't think it did either but I don't know what else it could be. I tried to feel it last night but he wasn't wanting me to touch that close to his head.

Looks like there might me some infection brewing under the skin...I'm not too familiar with snake injuries, but cats will form huge abscesses from a tiny claw puncture or even insect bites. The area all around swells up and fills with pus, once you shave away the fur, their is usually a tiny scab about the size a vaccine needle would make and the skin is very red around it. But i don't know if reptile abscesses form the same way, I've only ever seem already ruptured ones or shell abscess in hit-by-car turtles. If it continues to swell or starts to get redder, I'd call a vet. If it is an abscess then having it sterilely lanced will cause less damage in the long run than waiting for it to rupture.

I just checked on him again today and it seems to have went down dramatically. Still a slight knot but it's not nearly as big as it was.