Renfield's syndrome is a rare psychological condition where an individual has a compulsive desire to consume blood. This behavior is often linked to a fascination with vampires and may stem from underlying mental health issues. People with this syndrome may believe that drinking blood provides them with strength or vitality. The name "Renfield" comes from a character in Bram Stoker's novel Dracula, who exhibits similar behaviors. While the syndrome is not officially recognized in diagnostic manuals, it highlights the complex relationship between mental health and unusual cravings. Treatment typically involves therapy to address the underlying psychological issues.