My treatments with ketamine were done by an anesthesiologist and I told him I felt like we were playing a bit of "fuck around and find out" with this stuff.
I still want psychedelic therapy with psilocybin in a professional setting so I am interested in more datapoints around negative experiences especially from a peer in the same field.
But I was unable to sleep. I stayed awake for 3 days in a row, then I completely lost my mind, I was mixing reality with fantasy. My wife took me to emergency were I was given antipsychotics which broke that state and I was able to sleep.
But for the next weeks I had crying episodes out of nowhere and they gave me a higher AP dosages.
Slowly I was able to stabilize, but it took me months. The AP side effects were also awful.
Did the mushroom trip did this? Probably not, but it trigger the sleep deprivation which chain-reacted to something worse.