Comparison of cognitive functions in individuals with primary psychosis and substance-induced psychotic disorders

ABSTRACT

Background

Cognitive dysfunctions are common in patients with primary psychosis disorder (PPD) and substance-induced psychotic disorder (SIPD), and this problem is very important in the course of their treatment and relapse. The present research was done to study the cognitive functions in the patients suffering from PPD compared to the patients with SIPD.

Methods

In this analytical study, the study population included all patients admitted to Farabi Hospital, Kermanshah, Iran, diagnosed with PPD and SIPD, whose cognitive functions were compared using the Rey Auditory Verbal Learning Test (RAVLT), Symbol Digit Modalities Test (SDMT) and Verbal Fluency Test (VFT).

Results

Only the mean number of words in the first list that the patient was unable to identify (Miss) distinguished the two groups in terms of the mean RAVLT scores. Due to the number of accurate answers in the SDMT and the speed of visual search, there was no discernible difference between the PPD and SIPD groups. The results showed a significant difference between the two groups due to the total number of correct VFT word in two parts of letters and categories.

Conclusion

The results of the present study can be used in the treatment and rehabilitation of PPD and SIPD patients.

KEYWORDS:

• Cognitive functions
• primary psychosis disorder
• substance-induced psychosis disorder

Acknowledgments

The present work is the doctoral thesis of Dr Maryam Mirmoeini. The authors would like to thank the Substance Abuse Prevention Research Center and Clinical Research Development Unit (CRDU) of Emam Khomeini, Mohammad Kermanshahi and Farabi Hospital, University of Medical Sciences, and Kermanshah, Iran for their support, cooperation, and assistance throughout the study.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This article financed by the Substance Abuse Prevention Research Center, Vice Chancellor for research and Research and Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran [Grant number: 4000267].