X: Diseases of the respiratory system

J80-J84: Other respiratory diseases principally affecting the interstitium

The group of conditions under the title "Other respiratory diseases principally affecting the interstitium" refers to disorders that affect the tissue and spaces around the air sacs of the lungs, collectively known as the interstitium. These include various forms of pneumonia, alveolar damage (like Acute Respiratory Distress Syndrome), and lung diseases caused by inhaling dust and certain other substances. In general, these conditions might be caused by factors such as inflammation, infections, or exposure to harmful substances. Common signs can include coughing, shortness of breath, wheezing, and in severe cases, chest pain or distress. These conditions may cause the walls of the air sacs to thicken, making it difficult to breathe and disrupt the flow of oxygen from the lungs to the bloodstream. With disease progression, severe forms may lead to respiratory failure or heart problems.