Bidirectional Mendelian randomization analysis did not indicate a causal relationship between atopic dermatitis and COVID-19

The threat of COVID-19 infection imposes an additional psychological burden on patients with AD. Whether there is an association between AD and COVID-19 remains unclear as observational studies are susceptible to confounding factors and reverse causality. This study did not indicate a causal relationship between AD and susceptibility, hospitalization and severity of COVID-19.