» Sat Jul 07, 2012 7:32 pm
In Oblivion and Morrowind, vampirism was handled by a magic effect that altered the player's or an NPCs appearance; in Skyrim, the change is handled by altering the player's race. This allows for a vastly improved appearance, but most dialogue only checks if the player is the non-vampire race.
For example, you cannot harvest the blood of a Dark Elf vampire for Septimus Signus because he actually isn't the DarkElfRace, but the DarkElfVampire race. If you hit him with Wuuthrad, he'll take the normal amount of damage, et cetera.