Quasipsychosis is the psychosis-style sypmtoms that a borderline personality patient may have when under serious stress or triggered- you suddenly have these delusions, right? Where everyone hates you and it's awful and the world is REALLY out to get you.

And when you calm down, suddenly it's like none of that ever happened.

Unlike regular psychosis, these symptoms resolve on their own when you treat the borderline issues.

Splitting. This is where some of those delusions come from. When life goes normally, okay, people are subtle creatures, the world is complicated. When you get stressed, suddenly your boyfriend is in love with you completely or he isn't. You're good or you're wretched. The world is FINE and loving and supportive, or (more often) it's barbaric and everyone is lying to you.

Freud described it in relationships - where you have one person, your mom, and you have the good version of her and the bad version, and alternate between the two. I don't know if I buy this, I think it's just part of the overall polarised thinking, but I don't know for sure yet.

The answer is Hells yes, treatment helps. Being able to calm down, face the world with definite boundaries, and being able to entertain mixed feelings about things (anything) helps. You stop having to freak out as much and the bads aren't as bad. It's hard, and i'm not there yet. But I'm not screaming as much. The hardest part was learning to see it when it happened, because EVERYTHING in you is telling you that you're behaving completely appropriately. Then you suddenly realise that you aren't, and feel ashamed. The right thing to do then is to just sit down, to calm down, and let the world go to hell while you get YOURSELF soothed. Then we go back and try to pick up whatever we destroyed.

Note- in traffic, this means PULL OVER first.