I would have it Vet checked but I think Lick granuloma also.
DeeDee had one on her leg and it took forever to heal up even after I got her to stop licking which I had to do by wrapping her leg.
This is one of those cycle things, it itches so they lick it, which makes it itch more, more licking, more itching. The licking brings fluid and blood closer to the surface, so that is the swelling. So the first thing you have to do is to stop ALL licking.
Val da Tiger
Fuzzybutt the cat.
Neilla the Big White puppy.
RIP Cheyenne - AKA: Digger, CheyChey Girl, Cheyenne Large and In charge. 2/16/02 - 2/27/16
RIP Raya - AKA: Raz-a, Ray a Sunshine, RayBestos, the little one, Silly Girl. 9/21/05 - 6/27/14
RIP Lakota - AKA: Bubba, Big Boy, BooBoo (the other part of the Binky and BooBoo team). 1/19/03-9/19/2011
RIP DeeDee - AKA: DD Poo, Little Bit, Binky (part of the Binky and Booboo team) 6/23/02-6/20/11