THIS PAGE IS UNDER CONSTRUCTION The DSM-5 defines Hallucinogen Persisting Perception Disorder (F16.983) as follows: “Following cessation of use of a hallucinogen, the reexperiencing of one or more of the perceptual symptoms that were experienced while intoxicated with the hallucinogen (e.g., geometric hallucinations, false perceptions of movement in the peripheral visual fields, flashes of color,…