http://www.bloomberg.com/apps/news?pid=20601109&sid=ayIvmRwa4t6E&refer=home It's crying time again if you did't pay your trading dues.
majority of 'mental illness' is caused by external factors, marital breakup, drug abuse, or job site related etc.
as for mental illness in trading or stock market.. . it's a freaking con game or zero sum game. market makers playing tricks on your mind.