I have some trouble with rage myself, and have categorized it as hot and cold anger. Oftentimes I'm fine, but sometimes the slightest thing will set me off, and I'll start shouting and making illogical accusations. I can't hold it in at all. That's hot anger. Sometimes, however, I'm in a better mood, and the anger makes itself known through short bursts of intense frustration. This "cold" anger doesn't fade. It just waits beneath the surface, growing harder to control the more that's added to it. It makes my chest hurt, and makes me far more anxious than normal. Eventually it gets released as hot anger, but since it's been repressed for so long, I can become physically violent. It usually takes several outbursts to get it all out.

That said, I don't know what to do about it. I'm definitely worried that I'll hurt someone someday though.