Mapping the current trends and hotspots on depression comorbid with insomnia: A bibliometric analysis

Background: Depression and insomnia often co-occur and have a bidirectional relationship. This review utilized bibliometric and visualized analysis to explore current research hotspots and trends in this field to identify future clinical practice directions. Methods To identify papers on the comorbidity of depression and insomnia, the researchers utilized the Web of Science Core Collection (WoSCC). They employed tools such as CiteSpace, VOSviewer, and Scimago Graphica to visually analyze the knowledge network of authors, institutions, countries/regions, journals, cited authors, cited references, cited journals, and keywords in the field of depression comorbid with insomnia. Results A total of 697 papers were extracted from the Web of Science Core Collection (WoSCC) with Andrew D. Krystal being the most influential author in this area. The University of Pittsburgh and the United States emerged as the most prolific institution and country, respectively. The Journal of Affective Disorders was the most productive journal, with primary keywords including insomnia, depression, anxiety, disorder, and sleep. In terms of co-citation analysis, Morin, Cm led the field. The top-cited journal was Sleep, and the paper titled “Validation of the Insomnia Severity Index as an outcome measure for insomnia research” ranked first. Finally, “Psychiatry”was the most frequent study category. Conclusions This bibliometric analysis provides a comprehensive overview of current research on depression comorbid with insomnia and highlights key areas of focus, offering guidance for clinicians and researchers in selecting research directions.