Reavers

Reavers are those touched by Derone the Reaver and driven to madness by his influence. They are a violent and disturbing type of people, whose only goals in their remaining life are to kill others that aren't like them. To call them people is to stretch the definition of a person, as they have lost their minds completely and behave more like deranged zombies. Many people of even the most stubborn would rather flee their ancestral homes rather than risk capture by these creatures.
A common tell to help avoid these creatures are to listen carefully for a large cacophonous group of crows.