PT - JOURNAL ARTICLE AU - Dhruv Atool Amratia AU - Hannah Viola AU - Octavian C Ioachimescu TI - Glucocorticoid therapy in respiratory illness: bench to bedside AID - 10.1136/jim-2021-002161 DP - 2022 Dec 01 TA - Journal of Investigative Medicine PG - 1662--1680 VI - 70 IP - 8 4099 - http://hw-f5-jim.highwire.org/content/70/8/1662.short 4100 - http://hw-f5-jim.highwire.org/content/70/8/1662.full SO - J Investig Med2022 Dec 01; 70 AB - Each year, hundreds of millions of individuals are affected by respiratory disease leading to approximately 4 million deaths. Most respiratory pathologies involve substantially dysregulated immune processes that either fail to resolve the underlying process or actively exacerbate the disease. Therefore, clinicians have long considered immune-modulating corticosteroids (CSs), particularly glucocorticoids (GCs), as a critical tool for management of a wide spectrum of respiratory conditions. However, the complex interplay between effectiveness, risks and side effects can lead to different results, depending on the disease in consideration. In this comprehensive review, we present a summary of the bench and the bedside evidence regarding GC treatment in a spectrum of respiratory illnesses. We first describe here the experimental evidence of GC effects in the distal airways and/or parenchyma, both in vitro and in disease-specific animal studies, then we evaluate the recent clinical evidence regarding GC treatment in over 20 respiratory pathologies. Overall, CS remain a critical tool in the management of respiratory illness, but their benefits are dependent on the underlying pathology and should be weighed against patient-specific risks.