 Over time , some attributes now regarded as integral became incorporated into the vampire 's profile : fangs and vulnerability to sunlight appeared over the course of the 19th century , with Varney the Vampire and Count Dracula both bearing protruding teeth , and Murnau 's Nosferatu ( 1922 ) fearing daylight . The cloak appeared in stage productions of the 1920s , with a high collar introduced by playwright Hamilton Deane to help Dracula ' vanish ' on stage . Lord Ruthven and Varney were able to be healed by moonlight , although no account of this is known in traditional folklore . Implied though not often explicitly documented in folklore , immortality is one attribute which features heavily in vampire film and literature . Much is made of the price of eternal life , namely the incessant need for blood of former equals . 
