No where else to post this

SKI1119
I just saw someone else posted about their dog and I hate to do the same thing but I've ran out of places to look online. I'm working nights right now and worried sick about him he's my baby.
For a few days now he has been really licking his tail(about the middle of it) and chasing it. he is a lab mix . Today I finally got a look at it and I could tell there was a sore underneath the fur. It looked like it was oozing. I didn't get to see much because it bothers him so much.
Could this be a hot spot? Or anyone else experienced anything like it.
I put bactine on it before I went to work n my bf said he hasn't been licking as much 

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