Portal:Hallucinogens

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Introduction

A hallucinogen is a psychoactive agent which can cause hallucinations, perceptual anomalies, and other substantial subjective changes in thoughts, emotion, and consciousness. The common types of hallucinogens are psychedelics, dissociatives and deliriants. Although hallucinations are a common symptom of amphetamine psychosis, amphetamines are not considered hallucinogens, as they are not a primary effect of the drugs themselves. While hallucinations can occur when abusing stimulants, the nature of stimulant psychosis is not unlike delirium.

L. E. Hollister's[who?] criteria for establishing that a drug is hallucinogenic are as follows:

  • in proportion to other effects, changes in thought, perception, and mood should predominate;
  • intellectual or memory impairment should be minimal;
  • stupor, narcosis, or excessive stimulation should not be an integral effect;
  • autonomic nervous system side effects should be minimal; and
  • addictive craving should be absent.

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