vampirism

[ vam-pahyuh r-iz-uh m, -puh-riz- ]

/ ˈvæm paɪərˌɪz əm, -pəˌrɪz- /

belief in the existence of vampires.

the acts or practices of vampires.

unscrupulous exploitation, ruin, or degradation of others.

Origin of vampirism

First recorded in 1785–95; vampire + -ism

You could say that the metaphor of vampirism being a… release is probably true.

Hot-Blooded Horror |Nick Antosca |August 1, 2009 |DAILY BEAST
Whatever placidity there is is attained by means of vampirism.

The Kempton-Wace Letters |Jack London
There are many well-authenticated cases of vampirism in France and Germany.

Werwolves |Elliott O'Donnell
Now that vampirism, by the evocation of the dead, is joined to demonism, the victim is worse than possessed.

L-bas |J. K. Huysmans

It has been asserted that Bertrand was a vampire; but there are absolutely no grounds for associating him with vampirism.

Werwolves |Elliott O'Donnell
In a word, it is Vampirism, pure and simple, on the psychic plane.

H. P. Blavatsky |Alice Leighton Cleather

vampirism

/ (ˈvæmpaɪərˌɪzəm) /

belief in the existence of vampires

the actions of vampires; bloodsucking

the act of preying upon or exploiting others