In its timeless capacity to embody the human condition, the vampire is a poignant metaphor describing the psychosocial experience of the pariah - the outsider. The vampire is the Other that used to be human. The diseased, the mentally challenged, the homeless and hungry, ......are all vampires in a way; the other who used to be human, the invisible who casts no reflection among us.
Katherine Ramsland, The Science of Vampires
diseased, homeless, hungry, mentally-challenged, vampire