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Published on: January 22, 2016
Typologies of positive psychotic symptoms in methamphetamine dependence
Chad A Bousman1,2,3,4, Rebecca McKetin5, Richard Burns5
1Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia.
Background And Objectives:
Understanding methamphetamine associated psychotic (MAP) symptom typologies could aid in identifying individuals at risk of progressing to schizophrenia and guide early intervention.
Methods:
Latent class analysis (LCA) of psychotic symptoms collected from 40 (n = 40) methamphetamine dependent individuals with a history of psychotic symptoms but no history of a primary psychotic disorder.
Results:
Three typologies were identified. In one, persecutory delusions dominated (Type 1), in another persecutory delusions were accompanied by hallucinations (Type 2), and in the third a high frequency of all the assessed hallucinatory and delusional symptoms was observed (Type 3).
Discussion And Conclusion:
MAP is a heterogeneous syndrome with positive symptom typologies.
Scientific Significance:
This study represents the first attempt at identifying typologies of MAP and highlights the potential utility of LCA in future large-scale studies.
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