The original post: /r/todayilearned by /u/JackABoioi on 2025-03-13 14:48:52.

Original Title: TIL - Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences apparent lasting or persistent visual hallucinations or perceptual distortions after using drugs,[1] including but not limited to psychedelics, and dissosciatives.