1.Effects of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Criteria Changes for Schizophrenia on Diagnoses of First-Episode Schizophrenia Spectrum Disorders
WooRi CHO ; Sung-Wan KIM ; Seung-Hee WON ; Bong-Ju LEE ; Naohisa TSUJINO ; Youji TAKUBO ; Taiju YAMAGUCHI ; Takahiro NEMOTO ; Ling LI ; Thi-Hung LE ; Fatima Zahra RAMI ; Young-Chul CHUNG
Psychiatry Investigation 2025;22(2):212-217
		                        		
		                        			 Objective:
		                        			Impact of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) changes on the criteria for schizophrenia (SZ) has been reported to be minimal in previous studies. However, this could be different in first-episode schizophrenia spectrum disorders (FE-SSDs). We investigated what proportion of patients with FE-SSDs was diagnosed based on the sole presence of bizarre delusions (BDs) or first rank auditory hallucinations (FRAHs). Their alternative diagnosis by the DSM-5 was established and diagnostic stability over 1-year was identified. 
		                        		
		                        			Methods:
		                        			This was a retrospective review study on the medical records, case report forms for the subjects with FE-SSDs (n=404) participated in the Korea Early Psychosis Study. The two Japanese sites reviewed retrospectively only medical records of the subjects with FE-SSDs (n=103). We used three different definitions of BDs (strict, narrow, and broad) and specified subtypes of Other Specified Schizophrenia spectrum and Other psychotic disorders (OSSOs). To ensure inter-rater reliability between the hospitals, regular zoom meetings were held. 
		                        		
		                        			Results:
		                        			Forty (7.89%) subjects out of 507 were found to be diagnosed as SSDs based on the sole presence of BDs or FRAHs. All these patients met the criteria of OSSOs and were classified as having pure delusion (n=22), delusion with attenuated auditory hallucinations (AHs) (n=5), pure AHs (n=3) and AHs with attenuated delusion (n=10). The patients with first and second subtypes (n=27) were found to have BDs. The BDs fulfilled mostly strict definitions or satisfied the next broadest definition. The diagnostic stability of FE-OSSOs and its subgroups (first and second subtypes) over 1-year was substantially high (70.27% and 84% respectively). 
		                        		
		                        			Conclusion
		                        			These findings suggest that more rigorous diagnostic assessment should be performed especially to differentiate OSSOs from SZ in patients with FE-SSDs and more refined classification of the subtypes for OSSOs considered in the next DSM revision. 
		                        		
		                        		
		                        		
		                        	
2.Digital therapeutics in Korea: current status, challenges, and future directions – a narrative review
Hee Jun SHIN ; Ik Tae CHO ; Wan Suk CHOI ; Hong Rae KIM ; Min Bong KANG ; Won Jong YANG
Journal of Yeungnam Medical Science 2025;42(1):8-
		                        		
		                        			
		                        			 Digital therapeutics (DTx) are emerging as a transformative innovation in healthcare offering evidence-based digital interventions for the treatment, management, and prevention of various diseases and disorders. In Korea, DTx have gained significant attention as potential solutions to the increasing burden of chronic diseases and mental health conditions. However, the Korean DTx market faces several challenges that hinder its widespread adoption and integration into the national healthcare system. This study provides a comprehensive analysis of the current state of the DTx market in Korea, identifies the key challenges impeding its growth, and proposes strategies for overcoming these obstacles. This study utilized a literature review and market analysis approach to examine the latest research, industry reports, and regulatory documents related to DTx. The analysis focused on three primary areas: (1) the current regulatory landscape, (2) technological advancements and challenges, and (3) economic and commercial factors influencing DTx adoption in Korea. A comparative analysis of global regulatory practices was also conducted to identify best practices. The findings revealed that while Korea has made significant strides in supporting DTx development, the market remains in its early stages. The key challenges include underdeveloped regulatory frameworks, issues with data quality and security, and a lack of established reimbursement pathways. We recommend developing tailored regulatory frameworks for DTx, enhancing policy support for small and medium-sized enterprises involved in DTx development, and increasing investments in technological infrastructure. By addressing these challenges, Korea could position itself as a leader in the global DTx market, delivering innovative and effective treatments to enhance patient care and outcomes. 
		                        		
		                        		
		                        		
		                        	
3.Effects of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Criteria Changes for Schizophrenia on Diagnoses of First-Episode Schizophrenia Spectrum Disorders
WooRi CHO ; Sung-Wan KIM ; Seung-Hee WON ; Bong-Ju LEE ; Naohisa TSUJINO ; Youji TAKUBO ; Taiju YAMAGUCHI ; Takahiro NEMOTO ; Ling LI ; Thi-Hung LE ; Fatima Zahra RAMI ; Young-Chul CHUNG
Psychiatry Investigation 2025;22(2):212-217
		                        		
		                        			 Objective:
		                        			Impact of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) changes on the criteria for schizophrenia (SZ) has been reported to be minimal in previous studies. However, this could be different in first-episode schizophrenia spectrum disorders (FE-SSDs). We investigated what proportion of patients with FE-SSDs was diagnosed based on the sole presence of bizarre delusions (BDs) or first rank auditory hallucinations (FRAHs). Their alternative diagnosis by the DSM-5 was established and diagnostic stability over 1-year was identified. 
		                        		
		                        			Methods:
		                        			This was a retrospective review study on the medical records, case report forms for the subjects with FE-SSDs (n=404) participated in the Korea Early Psychosis Study. The two Japanese sites reviewed retrospectively only medical records of the subjects with FE-SSDs (n=103). We used three different definitions of BDs (strict, narrow, and broad) and specified subtypes of Other Specified Schizophrenia spectrum and Other psychotic disorders (OSSOs). To ensure inter-rater reliability between the hospitals, regular zoom meetings were held. 
		                        		
		                        			Results:
		                        			Forty (7.89%) subjects out of 507 were found to be diagnosed as SSDs based on the sole presence of BDs or FRAHs. All these patients met the criteria of OSSOs and were classified as having pure delusion (n=22), delusion with attenuated auditory hallucinations (AHs) (n=5), pure AHs (n=3) and AHs with attenuated delusion (n=10). The patients with first and second subtypes (n=27) were found to have BDs. The BDs fulfilled mostly strict definitions or satisfied the next broadest definition. The diagnostic stability of FE-OSSOs and its subgroups (first and second subtypes) over 1-year was substantially high (70.27% and 84% respectively). 
		                        		
		                        			Conclusion
		                        			These findings suggest that more rigorous diagnostic assessment should be performed especially to differentiate OSSOs from SZ in patients with FE-SSDs and more refined classification of the subtypes for OSSOs considered in the next DSM revision. 
		                        		
		                        		
		                        		
		                        	
4.Effects of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Criteria Changes for Schizophrenia on Diagnoses of First-Episode Schizophrenia Spectrum Disorders
WooRi CHO ; Sung-Wan KIM ; Seung-Hee WON ; Bong-Ju LEE ; Naohisa TSUJINO ; Youji TAKUBO ; Taiju YAMAGUCHI ; Takahiro NEMOTO ; Ling LI ; Thi-Hung LE ; Fatima Zahra RAMI ; Young-Chul CHUNG
Psychiatry Investigation 2025;22(2):212-217
		                        		
		                        			 Objective:
		                        			Impact of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) changes on the criteria for schizophrenia (SZ) has been reported to be minimal in previous studies. However, this could be different in first-episode schizophrenia spectrum disorders (FE-SSDs). We investigated what proportion of patients with FE-SSDs was diagnosed based on the sole presence of bizarre delusions (BDs) or first rank auditory hallucinations (FRAHs). Their alternative diagnosis by the DSM-5 was established and diagnostic stability over 1-year was identified. 
		                        		
		                        			Methods:
		                        			This was a retrospective review study on the medical records, case report forms for the subjects with FE-SSDs (n=404) participated in the Korea Early Psychosis Study. The two Japanese sites reviewed retrospectively only medical records of the subjects with FE-SSDs (n=103). We used three different definitions of BDs (strict, narrow, and broad) and specified subtypes of Other Specified Schizophrenia spectrum and Other psychotic disorders (OSSOs). To ensure inter-rater reliability between the hospitals, regular zoom meetings were held. 
		                        		
		                        			Results:
		                        			Forty (7.89%) subjects out of 507 were found to be diagnosed as SSDs based on the sole presence of BDs or FRAHs. All these patients met the criteria of OSSOs and were classified as having pure delusion (n=22), delusion with attenuated auditory hallucinations (AHs) (n=5), pure AHs (n=3) and AHs with attenuated delusion (n=10). The patients with first and second subtypes (n=27) were found to have BDs. The BDs fulfilled mostly strict definitions or satisfied the next broadest definition. The diagnostic stability of FE-OSSOs and its subgroups (first and second subtypes) over 1-year was substantially high (70.27% and 84% respectively). 
		                        		
		                        			Conclusion
		                        			These findings suggest that more rigorous diagnostic assessment should be performed especially to differentiate OSSOs from SZ in patients with FE-SSDs and more refined classification of the subtypes for OSSOs considered in the next DSM revision. 
		                        		
		                        		
		                        		
		                        	
5.Digital therapeutics in Korea: current status, challenges, and future directions – a narrative review
Hee Jun SHIN ; Ik Tae CHO ; Wan Suk CHOI ; Hong Rae KIM ; Min Bong KANG ; Won Jong YANG
Journal of Yeungnam Medical Science 2025;42(1):8-
		                        		
		                        			
		                        			 Digital therapeutics (DTx) are emerging as a transformative innovation in healthcare offering evidence-based digital interventions for the treatment, management, and prevention of various diseases and disorders. In Korea, DTx have gained significant attention as potential solutions to the increasing burden of chronic diseases and mental health conditions. However, the Korean DTx market faces several challenges that hinder its widespread adoption and integration into the national healthcare system. This study provides a comprehensive analysis of the current state of the DTx market in Korea, identifies the key challenges impeding its growth, and proposes strategies for overcoming these obstacles. This study utilized a literature review and market analysis approach to examine the latest research, industry reports, and regulatory documents related to DTx. The analysis focused on three primary areas: (1) the current regulatory landscape, (2) technological advancements and challenges, and (3) economic and commercial factors influencing DTx adoption in Korea. A comparative analysis of global regulatory practices was also conducted to identify best practices. The findings revealed that while Korea has made significant strides in supporting DTx development, the market remains in its early stages. The key challenges include underdeveloped regulatory frameworks, issues with data quality and security, and a lack of established reimbursement pathways. We recommend developing tailored regulatory frameworks for DTx, enhancing policy support for small and medium-sized enterprises involved in DTx development, and increasing investments in technological infrastructure. By addressing these challenges, Korea could position itself as a leader in the global DTx market, delivering innovative and effective treatments to enhance patient care and outcomes. 
		                        		
		                        		
		                        		
		                        	
6.Combination of intrarectal heated lidocaine gel and periprostatic nerve block for pain control during transrectal ultrasound-guided prostate biopsy: A prospective randomized trial
Jung Im KIM ; Dong Wan SOHN ; Bong Hee PARK
Investigative and Clinical Urology 2025;66(2):130-136
		                        		
		                        			 Purpose:
		                        			To investigate the role of combined periprostatic nerve block (PNB) and intrarectal local anesthesia with heated lidocaine gel (ILAHL) in reducing pain during transrectal ultrasound (TRUS)-guided prostate biopsy, compared with PNB alone. 
		                        		
		                        			Materials and Methods:
		                        			We performed a prospective randomized trial with 140 participants who underwent systematic TRUS-guid ed, 12-core prostate biopsy from July 2021 to June 2022. These participants were divided into two groups. Before prostate biopsy, group 1 (n=70) received PNB and group 2 (n=70) received PNB combined intrarectal local anesthesia with 20 mL of heated (40ºC) 2% lidocaine gel. The primary outcome was pain score on a 0–10 visual analogue scale (VAS) at four time points (VAS A: during local anesthesia procedure, VAS B: during probe insertion, VAS C: during biopsy procedure, VAS D: 30 minutes after biopsy). The secondary outcome included adverse events during and after the procedure. 
		                        		
		                        			Results:
		                        			Mean pain scores were significantly lower in group 2 than in group 1 at VAS A (2.53 vs. 1.60, p=0.001) and VAS B (2.47 vs.1.49, p<0.001). The mean VAS C pain score in group 2 was significantly less than in group 1 (3.07 vs. 2.20, p=0.001), while there was no significant difference in the mean VAS D pain score between two groups (1.06 vs. 0.89, p=0.318). There were no significant differences in the occurrence of complications in both groups. 
		                        		
		                        			Conclusions
		                        			The combination of PNB and ILAHL provides more effective pain control than PNB alone without increase of complication rates in patients undergoing TRUS-guided prostate biopsy. 
		                        		
		                        		
		                        		
		                        	
7.Digital therapeutics in Korea: current status, challenges, and future directions – a narrative review
Hee Jun SHIN ; Ik Tae CHO ; Wan Suk CHOI ; Hong Rae KIM ; Min Bong KANG ; Won Jong YANG
Journal of Yeungnam Medical Science 2025;42(1):8-
		                        		
		                        			
		                        			 Digital therapeutics (DTx) are emerging as a transformative innovation in healthcare offering evidence-based digital interventions for the treatment, management, and prevention of various diseases and disorders. In Korea, DTx have gained significant attention as potential solutions to the increasing burden of chronic diseases and mental health conditions. However, the Korean DTx market faces several challenges that hinder its widespread adoption and integration into the national healthcare system. This study provides a comprehensive analysis of the current state of the DTx market in Korea, identifies the key challenges impeding its growth, and proposes strategies for overcoming these obstacles. This study utilized a literature review and market analysis approach to examine the latest research, industry reports, and regulatory documents related to DTx. The analysis focused on three primary areas: (1) the current regulatory landscape, (2) technological advancements and challenges, and (3) economic and commercial factors influencing DTx adoption in Korea. A comparative analysis of global regulatory practices was also conducted to identify best practices. The findings revealed that while Korea has made significant strides in supporting DTx development, the market remains in its early stages. The key challenges include underdeveloped regulatory frameworks, issues with data quality and security, and a lack of established reimbursement pathways. We recommend developing tailored regulatory frameworks for DTx, enhancing policy support for small and medium-sized enterprises involved in DTx development, and increasing investments in technological infrastructure. By addressing these challenges, Korea could position itself as a leader in the global DTx market, delivering innovative and effective treatments to enhance patient care and outcomes. 
		                        		
		                        		
		                        		
		                        	
8.Effects of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Criteria Changes for Schizophrenia on Diagnoses of First-Episode Schizophrenia Spectrum Disorders
WooRi CHO ; Sung-Wan KIM ; Seung-Hee WON ; Bong-Ju LEE ; Naohisa TSUJINO ; Youji TAKUBO ; Taiju YAMAGUCHI ; Takahiro NEMOTO ; Ling LI ; Thi-Hung LE ; Fatima Zahra RAMI ; Young-Chul CHUNG
Psychiatry Investigation 2025;22(2):212-217
		                        		
		                        			 Objective:
		                        			Impact of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) changes on the criteria for schizophrenia (SZ) has been reported to be minimal in previous studies. However, this could be different in first-episode schizophrenia spectrum disorders (FE-SSDs). We investigated what proportion of patients with FE-SSDs was diagnosed based on the sole presence of bizarre delusions (BDs) or first rank auditory hallucinations (FRAHs). Their alternative diagnosis by the DSM-5 was established and diagnostic stability over 1-year was identified. 
		                        		
		                        			Methods:
		                        			This was a retrospective review study on the medical records, case report forms for the subjects with FE-SSDs (n=404) participated in the Korea Early Psychosis Study. The two Japanese sites reviewed retrospectively only medical records of the subjects with FE-SSDs (n=103). We used three different definitions of BDs (strict, narrow, and broad) and specified subtypes of Other Specified Schizophrenia spectrum and Other psychotic disorders (OSSOs). To ensure inter-rater reliability between the hospitals, regular zoom meetings were held. 
		                        		
		                        			Results:
		                        			Forty (7.89%) subjects out of 507 were found to be diagnosed as SSDs based on the sole presence of BDs or FRAHs. All these patients met the criteria of OSSOs and were classified as having pure delusion (n=22), delusion with attenuated auditory hallucinations (AHs) (n=5), pure AHs (n=3) and AHs with attenuated delusion (n=10). The patients with first and second subtypes (n=27) were found to have BDs. The BDs fulfilled mostly strict definitions or satisfied the next broadest definition. The diagnostic stability of FE-OSSOs and its subgroups (first and second subtypes) over 1-year was substantially high (70.27% and 84% respectively). 
		                        		
		                        			Conclusion
		                        			These findings suggest that more rigorous diagnostic assessment should be performed especially to differentiate OSSOs from SZ in patients with FE-SSDs and more refined classification of the subtypes for OSSOs considered in the next DSM revision. 
		                        		
		                        		
		                        		
		                        	
9.Digital therapeutics in Korea: current status, challenges, and future directions – a narrative review
Hee Jun SHIN ; Ik Tae CHO ; Wan Suk CHOI ; Hong Rae KIM ; Min Bong KANG ; Won Jong YANG
Journal of Yeungnam Medical Science 2025;42(1):8-
		                        		
		                        			
		                        			 Digital therapeutics (DTx) are emerging as a transformative innovation in healthcare offering evidence-based digital interventions for the treatment, management, and prevention of various diseases and disorders. In Korea, DTx have gained significant attention as potential solutions to the increasing burden of chronic diseases and mental health conditions. However, the Korean DTx market faces several challenges that hinder its widespread adoption and integration into the national healthcare system. This study provides a comprehensive analysis of the current state of the DTx market in Korea, identifies the key challenges impeding its growth, and proposes strategies for overcoming these obstacles. This study utilized a literature review and market analysis approach to examine the latest research, industry reports, and regulatory documents related to DTx. The analysis focused on three primary areas: (1) the current regulatory landscape, (2) technological advancements and challenges, and (3) economic and commercial factors influencing DTx adoption in Korea. A comparative analysis of global regulatory practices was also conducted to identify best practices. The findings revealed that while Korea has made significant strides in supporting DTx development, the market remains in its early stages. The key challenges include underdeveloped regulatory frameworks, issues with data quality and security, and a lack of established reimbursement pathways. We recommend developing tailored regulatory frameworks for DTx, enhancing policy support for small and medium-sized enterprises involved in DTx development, and increasing investments in technological infrastructure. By addressing these challenges, Korea could position itself as a leader in the global DTx market, delivering innovative and effective treatments to enhance patient care and outcomes. 
		                        		
		                        		
		                        		
		                        	
10.Effects of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Criteria Changes for Schizophrenia on Diagnoses of First-Episode Schizophrenia Spectrum Disorders
WooRi CHO ; Sung-Wan KIM ; Seung-Hee WON ; Bong-Ju LEE ; Naohisa TSUJINO ; Youji TAKUBO ; Taiju YAMAGUCHI ; Takahiro NEMOTO ; Ling LI ; Thi-Hung LE ; Fatima Zahra RAMI ; Young-Chul CHUNG
Psychiatry Investigation 2025;22(2):212-217
		                        		
		                        			 Objective:
		                        			Impact of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) changes on the criteria for schizophrenia (SZ) has been reported to be minimal in previous studies. However, this could be different in first-episode schizophrenia spectrum disorders (FE-SSDs). We investigated what proportion of patients with FE-SSDs was diagnosed based on the sole presence of bizarre delusions (BDs) or first rank auditory hallucinations (FRAHs). Their alternative diagnosis by the DSM-5 was established and diagnostic stability over 1-year was identified. 
		                        		
		                        			Methods:
		                        			This was a retrospective review study on the medical records, case report forms for the subjects with FE-SSDs (n=404) participated in the Korea Early Psychosis Study. The two Japanese sites reviewed retrospectively only medical records of the subjects with FE-SSDs (n=103). We used three different definitions of BDs (strict, narrow, and broad) and specified subtypes of Other Specified Schizophrenia spectrum and Other psychotic disorders (OSSOs). To ensure inter-rater reliability between the hospitals, regular zoom meetings were held. 
		                        		
		                        			Results:
		                        			Forty (7.89%) subjects out of 507 were found to be diagnosed as SSDs based on the sole presence of BDs or FRAHs. All these patients met the criteria of OSSOs and were classified as having pure delusion (n=22), delusion with attenuated auditory hallucinations (AHs) (n=5), pure AHs (n=3) and AHs with attenuated delusion (n=10). The patients with first and second subtypes (n=27) were found to have BDs. The BDs fulfilled mostly strict definitions or satisfied the next broadest definition. The diagnostic stability of FE-OSSOs and its subgroups (first and second subtypes) over 1-year was substantially high (70.27% and 84% respectively). 
		                        		
		                        			Conclusion
		                        			These findings suggest that more rigorous diagnostic assessment should be performed especially to differentiate OSSOs from SZ in patients with FE-SSDs and more refined classification of the subtypes for OSSOs considered in the next DSM revision. 
		                        		
		                        		
		                        		
		                        	
            
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