anesthesia
"I'd been given propofol for a colonoscopy, and it worked great. Out like a light, felt 100% afterward. A year later, I had a D&C--again it worked well for sedation and recovery. But soon after coming out of it, I started sneezing, with eyes and nose running like a faucet. That lasted three days, but didn't happen while I was asleep.  Benadryl and saline solution helped a little bit. I initially felt as if there was a sore spot in my left nostril, and I thought these hayfever-like symptoms were caused by the oxygen breathing tube. Others have indicated that it might have been the propofol. Maybe it's a combination. My doctor knew of no such side effect."