Bronchiolitis obliterans syndrome

Bronchiolitis obliterans syndrome (BOS) is a condition where the small airways in the lungs become inflamed and scarred, leading to narrowing or blockage. This results in difficulty breathing, especially with exertion, and a persistent cough. BOS often occurs after lung injuries, infections, or transplantation, and it progressively reduces lung function over time. It is a serious condition that requires medical management to slow its progression and improve breathing. Early detection and treatment are important to maintain quality of life and lung health.