anesthesia
"My husband had a procedure a week before mine and received propofol and felt wonderful, awake, alert and ready to drive home - not so fast.  As for me - not the same result. After the procedure I slept for 2 days and for the next 2-3 days my balance was off. If I tried to pick something off the floor I would fall forward and when I stood up I'd fall backwards. I couldn't shower for 4 days (drop the soap and I would lose my balance and fall forwards.  In my case a major central nervous side effect)."