Sounds very familiar - several years ago my dal x bumped his front foot coming up the stairs & started licking that foot and wouldn't leave it alone, he ended up w/it swollen, red & twice the normal size. Xray confirmed it was just soft tissue inflammation from excessive washing.
Avoid biting when a simple growl will do
The Spirit Lives As Long As Someone Who Lives Remembers You - Navaho Saying
Vindication ~ For all those pets who became sick or lost their lives from tainted pet food