A review.Sun et al. performed a systematic review and meta-anal. to evaluate the efficacy of antivirals, corticosteroids, and monoclonal antibodies as acute COVID-19 treatments in reducing the incidence of long COVID-19.Their study suggested that the use of corticosteroids during acute COVID-19 infection not only fails to prevent long COVID-19, but even slightly increases the incidence of long COVID-19 after treatment.Since the COVID-19 pandemic, there has been a clear association between dysregulation of inflammation and adverse clin. outcomes.Glucocorticoids may trigger immunosuppression and hinder viral clearance.The findings by Sun et al. could make clinicians hesitant to use glucocorticoids in patients with COVID-19.Whether glucocorticoids are involved in long COVID-19 is controversial.Here, the authors would like to highlight some points of concern and discussion.First, previous studies have demonstrated that the severity of a patient′s symptoms is related to long COVID-19.Second, the systematic review included five observational studies, which had a drawback of not considering glucocorticoid dose and duration.Third, the mechanism of long COVID-19 involves a variety of hypotheses, such as persistent viral infection, inflammation, and immune dysregulation.Thus, the accurate identification of patients with different phenotypes is the key to the rational use of glucocorticoids.