I had back surgery (S1 decompression) in November. I returned to work Jan 5. I am ha-ving difficulty at work....trouble thinking, concentrating, making mistakes. I am having daily frontal and top of my head headaches. I am making stupid mistakes at work that I would have never made before. Even at home, trouble following recipes, etc. They used propofol for my surgery. I don t think that is it but I am getting scared. PMH includes HTN, GERD, asthma. I should mention I have been having problems with my asthma and have been on high dose prednisone for the last 6 weeks, but the pred never did this to me before. I am 52, 5ft8in, 190 lb.