@sillyblone Hi. My husband has not been diagnosed with anything but Metabolic Encephalopathy. Jan 27 he had a fusion. He was pretty much perfectly normal, except for minor confusions at time, which I was told was typical for an 80 yr old. He had not been diagnosed prior to surgery, but doctors were told he could not tolerate drugs which we learned from a previous hospital stay. He had a red wristband indicating same. Somehow, he was given benadryl overnight, and then a muscle relaxer 2x, and no one could tell me who ordered this. The end result was a 3 day stay turned into a 10 day stay, and then when he was discharged, we had to see a neurologist who diagnosed him. Now, 2 months after surgery, his back is great, but he is showing many of the signs that you mention. What should I do? We have another neurology appointment this week. This all has happened since discharge. Any suggestions? I am trying to write down all symptoms for the neuro appointment.