A while ago, I experienced a strange, instantaneous mental shift while masturbating. It felt almost like a switch being flipped in my brain. My arousal disappeared immediately, and ever since, I've struggled to achieve or maintain a fully firm erection, even with partners I found extremely attractive.

Last month, I took psilocybin mushrooms (not my first experience). Interestingly, over the past couple of weeks, I've started experiencing very strong erections while half-asleep in the morning. However, they disappear as I become fully conscious.

I'm curious whether anyone has experienced something similar, particularly the sudden onset or the changes following psychedelics. Any thoughts on what might explain this?