ptsd for me is both mental and physical. The physical effects include uncontrolable shaking/trembling, increased heart rate, either fast shallow breathing or breath holding, nausa, vomiting, freezing on the spot, headaches, muscle tensing, restlessness, twitching, having to constanly move or tap feet/hands. also unfortunate side effects from medication to help control the anxiety from ptsd has landed me with the onset of diabetes so ptsd wins in screwing up lives all round!

it feels like my body betrays me and i have little control over the symptoms severity at times. This is not good when your body and mind seem to shut down while crossing the road as i can freeze on the spot and need someone to intervene so that i move out of the line of traffic. Hope this helps