Small changes in genes in the brain prevent the nervous system from
rebounding from everyday stress, eventually triggering a cascade of
molecular responses that leave the patient severely debilitated,
researchers from the Centres for Disease Control and Prevention
reported in the journal Pharmacogenomics.
http://smh.com.au/news/world/syndrome-not-just-a-malingerers-complaint-after-all/2006/04/21/1145344272772.html
"People Who experience mood swings, fear, voices and visions"