Things that make your stomach turn

Seeing wounds or surgeries or anything similar doesn't affect me at all. But, when I hear a verbal account of those, or read about it, my body gets light and I feel sick. Normally, when people get some kind of operation, it's polite to ask how it went, but people always describe the process, and I hate that. Some guy did that at work last year and my whole face turned red and I had to sit down after he finished his story. Before getting my wisdom teeth removed (the process was fine), the dentist was warning me of the remote problems that can occur, and I passed out on the floor. I don't know why it only occurs when those things are put into words though, maybe my mind just gets carried away on its own.

Jam it back in, in the dark.