My great friend and psychedelic brother has experienced similar unsettling sensations of the arms/hands. He told me that he felt as if he was being prepped for an alien surgery one time and that he opened his eyes to try and avoid the surgery, only to notice that his arms had been cut off from the elbow down. Pretty wacky!
Most of my open eyed experiences have been glorious. Well...i take that back. The very first one i ever had was due to a miscalculation and I took way more than i meant too.
I felt HUGE waves over energy pulsing through my body and as i looked forward into the center of my living room I watched the fabric of space-time start RIPPING apart and folding back in on itself. I literally watched a black hole open up in front of my television. I was rocking back and forth, panting, hanging onto both sides of my loveseat trying to cling to any last bit of reality i could. I remember thinking "Just close your eyes and relax, it will be ok", but the very second i closed my eyes my body EXPLODED into a BILLION particles and expanded outward into the universe.
I slowly came back to reality with a new appreciation for the power of the DMT. I had no idea that open eyed hallucinations that were THAT REAL could possibly occur. It was incredible! If i had been ready for it i think it would have been much more enjoyable but it caught me way off gaurd and kind of scared me.
With more experience i have learned to embrace these hallucinations and go with it. Some of the most mystical experiences that i've have were just me and my musician friend, chilling, him jamming on the acoustic and me sitting indian style on the floor. His music was literally floating around me and caressing my soul in the most incredible way. I kept looking at him like "please don't let this end, this is what it is like to experience true love! I can't beleive this is happening!!"
Anyways, enough rambling. Thanks for sharing your story!
Coinci-Transcendentalism