Hi,I use to have a quick temper.i did have a TBI when i was in viet nam but not sure as ive always been a nervous person Not a violent temper.
I have found ways to avoid issues by recognizing fear and anger in all their faces and avoiding it.Usually is just a little frustration that escalates.the way to strengthen your nervous system is through doing things you fear and hate to do.Like I did some volunteer work i realy didn't want to do .Afterwards u had much better impulse control when I became frustrated.
Doing this can lead to a depression free life which I enjoy pretty much despite my PD and this jerking condition.I found the works from Dr.Abraham Low to be very helpful in this venture for better mental health.