Pink patch on nose

[batchick]

Just a quick question. Ned was out and about a day taking advantage of another break in winter and I noticed he's got a pink patch on his nose. I've put an arrow pointing to it on the picture. The picture's not great, so I hope it is clear. It is only on the one side. It isn't oozing or anything. But since it was new and I couldn't think of any obvious cause I thought I'd ask.
He's as active as usual for winter, eating normally and pooping as usual.
Do you think he maybe caught it on something?

 

[Masin]

Aw, poor guy. Maybe he rubbed it on something?

 

[yagyujubei]

Looks like a rub mark to me.

 

[wellington]

Looks like a rub mark to me also. I would just keep an eye on it, making sure it doesn't get worse or infected.

 

[batchick]

Thanks, guys. I will keep an eye on it. Wonder what he rubbed it on. His shell?