I have a room full of cheap, breakable trinkets and a baseball bat. Works wonders. I can't always make it to the room in time, though. And sometimes it's a person that provokes the rage.

I don't think there is any specific trigger or reason. I just get in an irritable mood and anything will set me off. If I feel one of these moods come on, I'll just leave the area, if in public, and try to calm down.

It's just the way I am.