Any mental imagery in general? Like through mind's eye? Dreaming? I had a mind palace (like no joke) it took me years to build into something I could use, and I had a few seizures in relatively quick succession and I cannot imagine images with nearly the same clarity. My dreams are like trying to swim in molasses while wearing scuffed scratched glasses, and I haven't been able to access my mind palace in years. Any time I close my eyes I just see vague blurry shapes and colors, there's an environment there but I can't see it. Now, I can still see faces and remember them, but imagining in my head kissing my girlfriend is impossible. Her face warps and melts and my mental vision goes fuzzy.

This happens to me periodically and I seriously think it means we just need more potassium, less sleep disruption, and more time in nature to absorb green colors (soothing in memory, gives you good dreams) and exercise the eye muscles with long distance focus.

Aphantasia is not actually a real condition btw, the whole "imagine an apple" discourse is completely lacking in rigor. It's like the online ADHD discourse, or MENSA. It's a way for boring people to talk about themselves to each other. (Like most of Reddit and Wikipedia.)