Do Vampires exist ? Weather it is clinical vampirism or fiction some if not : most people indeed believe in vampires. Clinical vampirism, more commonly called Renfield's syndrome , is an obsession with drinking blood if you know someone like this you might wanna see a doctor.Clinical vampirism is named after the mythical vampire, and is a recognizable, although rare, clinical entity characterized by periodic compulsive blood-drinking, affinity with the dead and uncertain identity. It is hypothetically the expression of an inherited archaic myth, the act of taking blood being a ritual that gives temporary relief. From ancient times vampirists have given substance to belief in the existence of supernatural vampires. Four vampirists, including Haigh, the 'acid-bath murderer', are described. From childhood they cut themselves, drank their own, exogenous human or animal blood to relieve a craving, dreamed of blood-shed, associated with the dead, and had a changing identity. They were intelligent, with no family mental or social pathology. Some self-cutters are auto-vampirists; females are not likely to assault others for blood, but males are potentially dangerous. Vampirism may be a cause of unpredictable repeated assault and murder, and should be looked for in violent criminals who are self-mutilators. No specific treatment is known.The condition typically follows three stages. In the first, autovampirism or autohemophagia, the sufferer drinks his own blood, often cutting himself in order to do so. The second stage iszoophagia, which consists of eating live animals or drinking their blood. Obtaining animal blood from a butcher or slaughterhouse for consumption also falls into this stage.n the third stage, true vampirism, the sufferer's attention is turned to other human beings. He may steal blood from hospitals or blood banks, or drink blood directly from a living person. Some individuals commit violent crimes, including murder, after entering this stage.