Night Runner

Fifteen-year-old Zach is quite content living in a mental ward because of his unusual allergies until dark secrets about his past, his parents, and his strange sickness slowly surface, placing him in great danger.

Zach Thomson, an orphaned vampire, learns to cope with change after his friends Charlie and Luna become vampires, but after a mysterious creature appears, Zach learns he has an important role to play in an ancient prophecy that relates to the "End of Days.".