I gone threw with that, but hmmmm maybe sounds strong, but I dealt with it differently ... I felt is coming and no control of it, trying to control it down and is just gets worse...my solution was went to the bathroom - no lights - darkness mostly closed the door and flipping let it out. Kills your body that's for sure and your brain too... After I was way slower by movement... Don't try to stick for that a word you have to describe your feeling instead of try to give one word- you would like to open to your therapist and make his/her job easier to he/she can help you more proper adequate mode. So don't do short cuts.is not a nice feel, but what I learnt is better to flip let out the hell totally- you have to know it consciously will not kill you - but will be a hell of a pain. And somehow not after immediately but day by day somehow makes more clue with the things. For example can make it worse if somebody hug you or touch you?
And if you let it out when you do, make sure the place is good for that... Once I cried all day...started with 2hours cry ... Stopped deep depression - again cry longer and so on ... And can be tiring. But if your feeling not double with self harm, it would be safe to let it go.
What you need to learn is let it out, how ever is coming out...see as a massive splinters in the body and how you pull it out will be painful, but is have to come out. I know is scary, but after (at me worked) somehow the flashbacks and the rest is easier to deal with... The point I think take the thing for itself.
And usually make myself calmer "if I can feel that huge hell pain that means I'm able to feel the same opposite good" - if you can't feel pain you can't feel good neither. See it as a proof of you are alive and you are taking back what's yours, but we all have a massive job to do a deep spring clean in our emotions and trauma.
Is it useful? I know is a bit hard bottom...