alt Hacker NewsPTSD can happen especially when something goes wrong with the anesthesia. Happened to a man named Sherman Sizemore many years ago: https://www.nbcnews.com/health/health-news/family-sues-after...
Dramatized retelling of the story at 21m04s: https://m.youtube.com/watch?v=ny_s07D-LT8&t=1264s
There's also the movie Awake (2007) incorporating this element of being aware but unable to communicate it.