I went a little batshit on a Whole Foods cashier a couple of months ago because I was convinced he was not going to put a rubber band around my takeout food to keep it from opening up on the way home. Totally irrational! I was dealing with PTSD rage and also ovulating :) I feel pretty horrible about it now. So for the ladies, you might want to keep hormones in mind too, which just exaggerates all the other stuff -- I started taking magnesium along with my B vitamins, which helps the B6 to absorb better, and it's helped a ton with hormonal mood swings.
I know too well how the rage feeds on itself and feels totally justified, and how devastatingly embarrassing it can be afterwards. It's an energy that just wants to destroy. That same energy is fantastic for exercise, though - you can really turn it around into something productive that way, and diminish the grip it can have on you.
Also, a mantra that popped into my head not long after this incident was about trusting the best in people. The words that popped into my head were, "Expect to be accommodated!" I repeat this to myself over and over sometimes if I'm feeling a little unsteady while dealing with people. I think many of us have been subconsciously wired by trauma to expect people's intentions to be negative.
The other thing that has helped enormously is inner child work. I don't know if any of you do this, but it involves inviting split-off parts from your past to converse with you. This helps with integration. I have some 'angry teenager' energy that feels very wronged by my mom. A lot of rage about being emotionally neglected, invalidated, undermined, etc. So the work involves being able to hear what the parts are saying, and most importantly, acknowledging and validating their distress and their complaints. They just want to be heard. They're representing the parts of you that are suspended in time when the traumas occurred - they're still living it and don't realize what day/year it is. And then you can bring them up to the present. You can tell them things like "It's terrible that that happened to you. It was wrong. I totally get it. It feels awful to be treated like that over and over..." or just hang out and listen, and be there, and hold a space - you can do it on a felt sense level with no words and just 'feel the feelings' moving and changing around your body. And then you can bring them up to the present - you can have them look around, feel the floor, get a sense of where they actually are, and have them 'look out through your eyes' and you can tell them what year it is. It doesn't sound like it could be powerful, but it really can be. It's kind of working on the level of the unconscious, like dream work or hypnosis.
I still have anger, but I feel slightly more in control than I used to and keep up the inner dialogue :)