Interestingly, in cases of extreme dissociation (shutting down of sensory, motor and speech systems)) parasympathetic dominance occurs. When this occurs during trauma, extreme fear may lead to a state of serenity/ bliss.
all i mean is that, i think there is dysfunction in Autonomic Nervous System activity. The remedy is to reset this unbalance. There is either Sympathetic or Parasympathetic over-activity. I have not seen many cases with parasympathetic dominance though.
personally, i think my sympathetic nervous system (freeze response) is always in charge based on these facts:
1_ My shoulders are always tightened up so hard they could reach my ears. I realize this consciously at times and loosen them up. but in no time they are tight again. this also happens with my stomach, neck and jaw. they are automatically tight 24/7.
2_I can never let go of the anxious thoughts. I don't have intense anxiety or anything but i always feel like there are threats to my existence. I can never ease off in my bed. Those bs absurd thoughts are popping up 24/7 in my head. (My dp is not blank mind dp_ it's more of a depressive "you're enlightened" "let's do zazen" kinda dp with a shitload of inner monologues)
the fact that some people have snapped out of DDD after water fasting/ taking supplements/ going on a paleolithic diet... supports the fact that the autonomic nervous system needs a reboot. then what gives your body a reboot?! it's different for everybody. but possible.
this treatment may not cure all of us but it could and it will bring some temporary relief for some. I'm waiting for people to post results about this but am really positive about it.