You can get it from one trip. Hell, you can even get it from smoking a joint. I know this sounds like something you might see in a DARE campaign but it is real.

You can get it from one trip. Hell, you can even get it from smoking a joint. I know this sounds like something you might see in a DARE campaign but it is real. It's a very under appreciated risk of psychedelics. If you define HPPD as some level of negative visual changes that interfere with functioning I actually think a lot of people who have used psychedelics would quality to some extent. The question is: how significant are the changes? Are we talking almost imperceptible extra visual white noise or maybe like what I experienced that even made it harder to read and see at night. HPPD does seem to fade but it can take a long time.