Causes
In the original myths and legends, lycanthropy is not given any specific cause other than being generally attributed to magic, which may be voluntary (a supernatural power) or involuntary (a curse). The notion of werewolves and other lycanthropes infecting humans through bites is a feature of modern fiction.
Clinical lycanthropy, where one believes that he or she is an animal or can turn into an animal, is a mental disorder with psychological causes, as contrasted to legendary lycanthropy.
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