Its just a Cyrodil vampires.
Only one known tribe exists in Cyrodiil; they are experts of concealment, their true name lost in history. Much like the Imperials, they ousted their competition. Indistinguishable from the living if well-fed, these Cyrodiilic Vampires are cultured and more civilized than vampires of other provinces, using their stealthy abilities to feed on the sleeping and unaware. Calling themselves the Order, they have made Cyrodiil their home as of the Third Era, and in accordance with their strict tenets, these vampires follow the Daedric Princes Molag Bal and Clavicus Vile
And now Skyrim vampires
The next day, he did return with more questions, these ones very specific. He wanted to know about the vampires of eastern Skyrim. I told him about the most powerful tribe, the Volkihar, paranoid and cruel, whose very breath could freeze their victims' blood in the veins. I explained to him how they lived beneath the ice of remote and haunted lakes, never venturing into the world of men except to feed.
Having in mind that they venture into the world of men only to feed, they probably look more monstrousy rather than like men like it was in Cyrodil. Cyrodil vamps were feeding on sleeping victims and were more civilized, so beeing a Volkihars vamp would be a whole different experience.
Buyt maybe some other vampires showed in Skyrim area within those 200 years, like Cyrodil vampires :sadvaultboy: . That would svck