The 23-year-old married man started slicing his own arms, chest and stomach with razor blades, and gathering the blood in a cup so he could drink it.
He soon became addicted and started turning to other sources to feed his habit which he described as being “as urgent as breathing,” the Daily Mail reported.
Apparently, he even got his father to get him bags of the bodily fluid from blood banks, according to the reports released by the Journal of Psychotherapy and Psychosomatics.
The man, whose name was not revealed in the report, was arrested several times after stabbing and biting others to collect and drink their blood.
He also developed multiple personalities and suffered from amnesia.
“Possibly due to ‘switching’ to another personality state, he was losing track during the ‘bloody’ events, did not care who the victim was anymore and remained amnesic to this part of his act,” the report said.
Medical professionals believed his behaviour was a reaction to horrific events in his life, such as witnessing a killing where “one of his friends cut off the victim’s head and penis,” the researchers said.
He had also been traumatised by the death of his four-month-old daughter, and by the murder of his uncle.
The doctors, led by Direnc Sakarya, of Denizli Military Hospital in southwestern Turkey, diagnosed the man with dissociative identity disorder (DID), post-traumatic stress disorder (PTSD), chronic depression and alcohol abuse.
To their knowledge, the man is the first patient with “vampirism” and DID.
The authors of the vampire case study note that DID is often linked to childhood abuse and neglect.
The blood addict’s mother was described as having attacked him in “freak out” episodes during his teenage years, but the man said he had no memory of his childhood between the ages of five and 11.
The man felt tortured by an “imaginary companion” who forced him to carry out violent acts and attempt suicide.
In a follow-up six weeks after he was treated, the doctors said the man’s blood-drinking habits were in remission, but his dissociative symptoms persisted.