Exploring the overlap between alopecia areata and major depressive disorder: Epidemiological and genetic perspectives

    January 2023 in “ Journal of the European Academy of Dermatology and Venereology ”
    Jerome C. Foo, Silke Redler, Andreas J. Forstner, F. Buket Basmanav, Lynn Pethukova, Jia Guo, Fabian Streit, Stephanie H. Witt, Lea Sirignano, Lea Zillich, Swapnil Awasthi, Stephan Ripke, Angela M. Christiano, Falko Tesch, Jochen Schmitt, Markus M. Nöthen, Regina C. Betz, Marcella Rietschel, Josef Frank
    TLDR People with alopecia areata are more likely to have major depression, possibly linked to a specific genetic region.
    The study investigated the comorbidity between alopecia areata (AA) and major depressive disorder (MDD) using data from 1,855,230 individuals, revealing that 0.34% had AA, 15% had MDD, and 0.55% had both conditions. It found that AA increased the risk of MDD by 1.39 times, with a higher prevalence of MDD in AA patients (44%) compared to controls (20%), especially in females and those with a family history of psychiatric disorders. Genetic analyses suggested a potential overlap in the genetic basis of AA and MDD, particularly in the MHC region, but no broad genetic correlation was found. The study emphasized the need for further research into shared genetic and immunological pathways and highlighted the importance of considering MDD risk in AA patients. Limitations included the sample size and focus on individuals of European ancestry.
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