Interstitial lung disease refers to a group of disorders that affect the lungs, specifically the tissue and space surrounding the air sacs in the lungs. This condition is characterized by inflammation and scarring of the lung tissue, which can lead to difficulty breathing, shortness of breath, and reduced oxygen levels in the bloodstream. The exact cause of interstitial lung disease varies depending on the specific disorder, but it can be caused by factors such as autoimmune diseases, exposure to certain chemicals or dust, viral infections, or genetic factors. Treatment options for interstitial lung disease depend on the underlying cause and severity of the condition, but may include medications, oxygen therapy, pulmonary rehabilitation, or in severe cases, a lung transplant.