I suppose that it is possible. Anywhere that you have pores, you can get pimples. I believe that you have pores everywhere. I guess you just wait for them to go away, or... Well, I guess you could use pimple cream, but that might require some explanation.
Vampires cannot exist. At least, not like the ones in twilight. It is possible for people to drink blood, but it is NOT possible to have all of those powers that they have in twilight.