Causes
The cause of the scarring in UIP may be known or unknown. The latter situation is more common. Since the medical term for conditions of unknown cause is "idiopathic", the clinical term for UIP of unknown cause is idiopathic pulmonary fibrosis (IPF). Examples of known causes of UIP include systemic sclerosis/scleroderma, rheumatoid arthritis, asbestosis and chronic nitrofurantoin toxicity.
Read more about this topic: Usual Interstitial Pneumonia