Not really, at least, not anymore.

There are some people that come to RPGs to escape reality and man, do they need it. D&D holds out a promise of agency, power, and control, in a fantasy setting free from real consequences. Provided a player lacks these things in real life, they can cling to it like a life-preserver. Then, take any of that away - as a DM must do - and things can get ugly.

I really want to say that there's a known and practiced way to get people like this some real help, like a free hotline or website. After all, if it's going to come up, this is the place it's going to happen. Sadly, I know of no such resource.