Overview of Interstitial Lung Diseases Interstitial lung diseases (ILDs) are a group of disorders that cause inflammation and scarring of the lung tissue. This damage affects the interstitium, the network of tissue surrounding the air sacs (alveoli) where gas exchange occurs. As the interstitium becomes inflamed and fibrotic, the lungs become stiff and less able to expand and contract properly, leading to difficulty breathing and reduced oxygen exchange. ILDs can be idiopathic (with no known cause) or secondary to other conditions or exposures. They can progress slowly or rapidly, and their severity can vary widely. Effective management is crucial for…