Lycanthropy is a 'disease' that turns people into werewolves.
The Demonata series
Lycanthropy is a major part of The Demonata series and plays a big part in the build up to the last book.
Between 350AD and 400AD, Bec McConn's actual family were suffering as their numbers were dwindling. They needed to find a way to get their numbers up and that is when the Demonata came into their world. The Demonata bred with the humans and they had babies. Some would transform into a wolfen-like creature in their teens. These were the first Werewolves. They were chained up in a few houses to stop them from killing any one. The lycanthropy gene was passed on through people and so the 'curse' was born.
Known Lycanthropy sufferers
People known to have suffered from Lycanthropy are: