"We estimate the size of the inpatient behavioral health segment as a 
$20 billion market, and believe it is growing at a high-single-digit 
rate.  ...  Given the potential for passage of mental health parity 
legislation in the U.S., we think the size of the behavioral health 
market could increase dramatically, especially among the untreated 
and undiagnosed as they begin to seek more comprehensive treatment 
due to improved insurance coverage and as coverage limits are 
increased.   We believe that 
<http://investing.businessweek.com/research/stocks/snapshot/snapshot.asp?symbol=PSYS>PSYS 
has an approximate 20% share of the inpatient psychiatric hospital 
market and is the largest pure-play public company in the inpatient 
psychiatric industry."

http://www.businessweek.com/investor/content/sep2007/pi20070924_841452.htm



"People Who experience mood swings, fear, voices and visions"