Mutations - The Elder Scrolls V: Skyrim wiki
Lycanthropy is a disease/blessing that can be contracted/received in The Elder Scrolls V: Skyrim. Werewolves are men and women who can transform into powerful and monstrous wolves for daytime or night time. Certain individuals, such as some of the Companions in Whiterun, see this as a blessing, a way of drawing on the strength and ferocity of their inner beast. Others, such as the Silver Hand, see it as a curse, a twisting of their wills and nature. As of Dawnguard, wild Werewolves, called Werewolf Vargrs, have been added into the wild as random encounters.
Vampire Lords is a power available in The Elder Scrolls V: Dawnguard, that serves as an extension of traditional vampirism. They have an altered and sinister appearance, one that is more drastically and artfully constructed than that of a regular vampire. The Vampire Lord features 11 unique perks and two combat modes -- Melee Mode and Blood Magic mode. Of the newly added spells is the ability to use consumed blood to vitalize the Vampire Lord and the ability to summon Gargoyles the way atronachs are summoned via the use of Conjuration magic. The power bite attack adds a unique cinematics where the Vampire Lord wraps its wings around the victim and bites them on the neck.