Those types of traders should not be trading...they shouldn't even have a trading account. In fact, they shouldn't even be hanging out at trading forums or anything to do with trading.
Most folks in situations like that just get a job when they run out of money but there are a few in past news that did exactly what you stated and in those stories...they had other issues not related to trading that was extremely problematic.
Simply, if you don't have a healthy mind...it doesn't matter if you're a trader or a dentist or a police officer or a real estate agent or a soldier that has returned home from combat....your risk of suicide increases when the economy goes southward or when you have financial crisis.
The problem is money itself...many in the world attach their identity or worth to money.
P.S. Anybody remember the woman that spent all of her money (life savings) on lottery tickets when the Powerball went over a billion dollars ? She didn't when and was broke. She then asked for financial help on gofundme and people started giving her money...some included advice like "go invest that money and don't play the lottery anymore".
That's my point, people mistakenly see money as a solution to problems that have nothing to do with money. That's why I keep saying, many traders are not suitable for trading long before they open a trading account...they have real problems not related to trading that needs to be resolved first because trading (the markets) is very good at exposing unhealthy minded people.