Why is interstitial pneumonia so difficult to treat?

In fact, many interstitial pneumonia can be alleviated or even cured, and only a few diseases cannot be reversed. Many reasons, including collagen angiopathy, may lead to interstitial pneumonia. The so-called collagen angiopathy, formerly known as connective tissue disease, is a pathological change caused by the autoimmune system attacking itself, including rheumatoid arthritis, systemic sclerosis, Sjogren's syndrome, myositis/dermatomyositis, systemic lupus erythematosus and so on. These diseases usually invade joints, glands, kidneys and trachea, and often invade the lungs, leading to various lung diseases. Interstitial pneumonia is one of them. Interstitial pneumonia caused by this cause can actually be treated and controlled, and most of them rely on hormones and immunosuppressive drugs to alleviate the condition. There are other reasons, especially interstitial pneumonia caused by drugs, such as the situation caused by long-term oral amiodarone, which can be relieved by itself after stopping taking drugs.

Unknown interstitial pneumonia, also known as idiopathic interstitial pneumonia, includes seven types: nonspecific interstitial pneumonia, respiratory bronchiolitis with interstitial pneumonia, lymphocytic interstitial pneumonia, desquamation interstitial pneumonia, acute interstitial pneumonia, cryptogenic organizing pneumonia's disease and idiopathic pulmonary fibrosis, among which acute interstitial pneumonia and idiopathic pulmonary fibrosis are dangerous and difficult to treat. Other types have opportunities for treatment and remission, especially those related to smoking, such as respiratory bronchiolitis interstitial pneumonia and desquamation interstitial pneumonia, which often relieve themselves after quitting smoking.