Global Epidemiology of Telogen Effluvium After COVID-19 Pandemic: A Systematic Review and Modeling Study

    September 2024 in “ JAAD International ”
    Jae Joon Jeon, You Hyun Kim, HyunJun Kang, Min Chul Ha, Seung‐Won Jung, Hwancheol Son, Myung Ha Kim, Won‐Soo Lee, Solam Lee
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    TLDR Telogen effluvium increased globally after COVID-19, especially in Asian and Latin regions.
    This study systematically reviewed and modeled the global epidemiology of telogen effluvium (TE) before and after the COVID-19 pandemic, using data from 90 studies across 26 countries. The global prevalence of TE increased from 3.44% before the pandemic to 5.41% after. The highest prevalence was observed in China (13.33%) and the lowest in the US (2.08%). The study highlighted a significant increase in TE incidence among Hispanic/Latinx and Asian populations during the pandemic, with a generally higher prevalence in Asia and Latin regions. The study suggests that systemic inflammatory responses from COVID-19 may contribute to TE, though the exact mechanism remains unclear. Limitations include a focus on outpatient populations and insufficient data to differentiate acute from chronic TE. The findings underscore the need for further research on TE predisposition related to race and ethnicity, especially given the growing skin-of-color populations in the US.
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