Maybe it's some kind of herpes ,I'm not sure...don't know the details..but it doesn't appear like the herpes that usually comes out on the lips,cheeks,chin..I'll look and maybe tell you what is this,really
I think it's Herpes Zoster,but you better go to the doctor ,before the blisters show up..do not treat it home with some ancient medicine your grandma told you,you might make it worse