Hallucinogen Persisting Perception Disorder

Hallucinogen Persisting Perception Disorder (HPPD)

Hallucinogen persisting perception disorder (HPPD) is a chronic condition in which a person has seemingly persistent visual hallucinations following a previous hallucinogenic drug experience, without the same intoxication or altered state of consciousness that is associated with the drug.  Several weeks, months, and even years after using hallucinogenic drugs such as MDMA (ecstasy) and psilocybin…

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