Answer:
no, just a myth. they started out as a nightmare, and then became famous and was turned into scary stories
To add yes there is just like vampires no i am not crazy i have been searching this up for 11 years and i have seen it for my eyes it was scary. While a person was changing i heard the bones brake and see them brake it was just scary. Vampires i have seen and reported this to the cops a man sucking a woman
If you do not think i am telling the truth then you search for a year and see what can be found