Psychedelics use is not without its risk, with more research needing to be done on potentially adverse side effects. A study from the Imperial College London and the University College San Francisco sought to evaluate the cognitive and perceptual changes associated with delusional ideation, magical thinking and hallucinogen persisting perception disorder (HPPD).  The results concluded …

Subreddit r/HPPD is an online community that provides support for those who suffer from Hallucinogen Persisting Perception Disorder (HPPD). HPPD is a very rare disorder in which a person will experience continued hallucinations, typically paired with visual snow, usually after taking a psychedelic drug. The subreddit recently announced its very first observational study in partnership …

Visual snow, as described in a paper published in Neurology, “is a recently identified neurologic condition consisting of a constant positive visual disturbance described as uncountable tiny dots over the entire visual field.” Patients describe it as like seeing a TV static image everywhere they look, and it can be highly disabling for those who …