Help! Sherwin has an infected sore

[jen218300]

Okay, so like 2 weeks ago I noticed he had a scratch on the back of his neck and just a small dry scab. very small. Well, the thing has grown exponentially. Now it looks like a big mole but solid red. Tonight he was in my lap and I noticed it was bleeding. I washed it with "wound wash" and it is still bleeding. What in the world could it be? For it to go from a scab to a fully engorged sore. I have no idea. Help anybody...

[Giselle]

You probably just need antibiotics. In other words, go to the vet