I got a new one* last week. (*side affect, symptom, evidence of progression)
"Parasomnia REM sleep behavior disorder (RBD)"
What happened was I was having a dream and in the dream I struck out (to defend my life I might add) and yet when I awoke, in the middle of said dream, I was smashing my fist into the chest of drawers next to the bed. I think i was on the third punch before I woke up and stopped. Needless to say it took quite a while to get back to sleep.
Medically it is referred to as RBD in which people physically act out their dreams in ways that can be dangerous to themselves and those around them. in this instance I am thankful I didn't hurt anyone other than myself.
Off to the Neuro Psychiatrist... I suppose.