What disorder has been linked to the origin of vampires and werewolves based on perceived similarities between the condition and the legends?

Historically linked to legends of vampires and werewolves, Porphyria is a group of liver disorders that negatively affect the nervous system and skin. However, while this belief increased in popularity around 1985, it has been widely discredited since.

Asked by Rachel Bortles · Last updated 4 years ago · 5.1K views · SOURCE