Corticosteroids in severe community-acquired pneumonia: friend, foe or both?

In most patients with CAP, corticosteroids should be avoided due to complications such as immunosuppression and hyperglycaemia. Studies of hydrocortisone have shown corticosteroids might be of benefit in patients with severe CAP and high inflammation measured by CRP. Differences in results between trials of corticosteroid therapy suggest heterogenicity in study populations and the need for future studies in standardized populations. Scientific evidence shows corticosteroid use can reduce short-term mortality and the need for mechanical ventilation in hospitalized patients with severe CAP. However, this approach should not be generalized to all patients with CAP. Use should be guided by biomarkers such as CRP to identify patients who will benefit the most. Corticosteroids should not be routinelly used in viral pneumonia, with the exception of hypoxemic SARS-CoV-2 pneumonia, in which their benefit is well established.