Ghost, I would do the same thing when triggered by something. It is a good idea to get checked out physically. This was my same reactions and it was all psychological for me. I had anxiety and figured out a whole bunch of things and now I feel much better and don't shake anymore. Boundaries were a big part of this for me, the boundaries between ourselves and other people. I didn't have healthy boundaries. I learned how to have healthy boundaries. If this is psychological, you are doing it for very clear reasons and all you have to do is figure out these reasons. Have you considered therapy?