New insights in COVID-19–associated chilblains: A comparative study with chilblain lupus erythematosus

To the Editor: An unexpected outbreak of chilblains has been reported in association with COVID-19.1 Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been shown in a few documented cases of chilblains. Chilblains may also be observed in acquired lupus and rarely as a manifestation of a familial disorder related to interferonopathies. To enhance understanding of these…

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