"Hierarchical conflict has been well documented in non-human primate
societies (although with variable effects on health), and it is
hypothesized that human hierarchies, in so far as they are structures
based on domination, may affect health by means of the chronic stress
associated with subordination."
http://www.informaworld.com/smpp/content~content=a779701687~db=all~jumptype=rss
"People Who experience mood swings, fear, voices and visions"