Cannabis-induced psychosis: a cross-sectional comparison with acute schizophrenia.

Abstract:

OBJECTIVE:The existence of cannabis-induced psychosis (CP) remains controversial, partly because of methodological problems. We hypothesize that acute schizophrenia (AS) and CP can have distinct demographic, premorbid and clinical features. METHOD:We compared 26 patients with CP to 35 with AS, after their cannabis-consumption status was confirmed by repeated urine screens. Patients with CP were assessed after at least 1 week but not more than 1 month of abstinence. Symptoms were evaluated with the Present State Examination (PSE). RESULTS:In group CP, male gender, expansive mood and ideation, derealization/depersonalization, visual hallucinations, and disturbances of sensorium were more frequent than in group AS. Premorbid schizoid personality traits were more frequently associated to AS and antisocial personality traits to CP. CONCLUSION:The continuous heavy use of cannabis can induce a psychotic disorder distinct from AS. These two clinical entities share some features but they differ in others.

journal_name

Acta Psychiatr Scand

authors

Núñez LA,Gurpegui M

doi

10.1034/j.1600-0447.2002.1o079.x

subject

Has Abstract

pub_date

2002-03-01 00:00:00

pages

173-8

issue

3

eissn

0001-690X

issn

1600-0447

pii

1o079

journal_volume

105

pub_type

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