Psychic vampires do exist but their basically psychic leeches is all. Their are cults that exist were they believe they are vampires, they also do drink blood from host that volunteer.
Basically it is under religous protection rights and freedom of belief but they do consider Vampirism a type of spirituality.
Heres one link of those who follow this belief sysytem:
To tell you the truth there is no magick that turns one into a supernatural creature of the night.
But an initiation into a coven of people with the similair belifs
and follows of their philosophy may help.
I don't know really but thats my thought process on this.