Abstract
There are several medical disorders that could have led the belief of vampires actually existing and one of these is PORPHYRIA which comes from the Greek word porphyros meaning reddish-purple which refers to the a substance that is prominent in the blood and urine of a person that has the symptoms of Porphyria which is a combination of 7 main types and 4 acute types of diseases, which were first identified in the nineteenth century. These diseases are rare and it is only in the twentieth century that they have been pinpointed and described.
A factor to bring in to the account is a psychological affliction that is not officially recognised by the psychological board and that is Renfield Syndrome or the technical term Clinical Vampirism which is in it self a form of Schizophrenia.