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Hallucinogen-Related Disorders

  1. Olivia Y. Hung,
  2. Charles F. Gillespie

Published Online: 30 JAN 2010

DOI: 10.1002/9780470479216.corpsy0400

Corsini Encyclopedia of Psychology

Corsini Encyclopedia of Psychology

How to Cite

Hung, O. Y. and Gillespie, C. F. 2010. Hallucinogen-Related Disorders. Corsini Encyclopedia of Psychology. 1–2.

Author Information

  1. Emory University School of Medicine

Publication History

  1. Published Online: 30 JAN 2010


Psychosis is a disturbance in the perception of reality, evidenced by hallucinations (false sensory perceptions), delusions (false beliefs that are not shared with any other people), or disorganized thoughts. Psychotic states brought on by hallucinogen use are often referred to as “trips” by recreational users, and they may be accompanied by agitation, aggression, and other forms of behavioral impairment. Trips generally involve existential experiences, distortions in perception, and synesthesias (blending of the senses).


  • hallucinogen;
  • psychosis;
  • LSD;
  • mescaline;
  • peyote;
  • ecstasy;
  • ketamine;
  • PCP;
  • inhalant