Hi treefrogsrules, cute frog.
If you can, try to find out whats causing the injuries and remove it...maybe something like a jagged edge in the enclosure. About two years ago I had a frog that had the skin on the nose area wearing away and i found out that this particular frog liked to sit in this one corner with his nose pressed up against the glass. It was a daily ritual of his. In the end I had to line that particular spot with pressed moss.

He still goes to that spot but nose is all good now.