When your character wakes up, they will notice just how much hungrier they feel as of late. Everything they can get their hands on, they'll want. Some might even be tempted to take a bite out of their friend. Sometime this week, Famine will be rolling into town, in a more literal sense. When he gets there, the need to eat will almost be impossible to resist.
Everyone will be affected by this, including demons, Time Lords, and angels. It will come without much notice, but will be quickly noted after it has taken effect.
There will be no character deaths, unless you wish to have your character eaten alive. There may be injury, and pleanty of biting. Good luck, and have fun!