The Renfield syndrome is a rare genetic disorder caused by the lack of Hemoglobin in the blood which can tempt the patient to consume blood. By the way, it can be controlled by having a bala... Read allThe Renfield syndrome is a rare genetic disorder caused by the lack of Hemoglobin in the blood which can tempt the patient to consume blood. By the way, it can be controlled by having a balanced diet and psychotherapy.The Renfield syndrome is a rare genetic disorder caused by the lack of Hemoglobin in the blood which can tempt the patient to consume blood. By the way, it can be controlled by having a balanced diet and psychotherapy.