spondylolisthesis
""I have spondylolisthesis, L4/L5-S1, 2 bulging discs, and stenosis. After my 2nd fusion surgery I was prescribed Gabapentin. I found I would forget what I was talking about in the middle of a sentence, and acute disorientation! I remember I had just finished paying for my groceries and the next thing I knew I woke up in the ER! I guess I became very disoriented in the store. I was fine after "waking" & took a taxi back to the store. I had NO CLUE what had happened! About a week later I was heading to physical therapy, blacked out and hit a tree, totalling my car. I suspected the Gabapentin, as that was the only "new med" for me. I was told it was making me irritable and combative (still don't remember that). I quit taking it & problem gone!"