Acute respiratory distress syndrome is a critical medical syndrome characterized by the acute onset of widespread inflammatory injury to the lungs, leading to impaired gas exchange. As a research concept, it encompasses the investigation of its complex pathophysiology, including epithelial and endothelial damage, cytokine storm, and non-cardiogenic pulmonary edema, alongside the development and evaluation of diagnostic criteria, therapeutic interventions, and strategies to improve patient outcomes and reduce long-term morbidity.