Confused?

A basic description of interstitial lung disease:

Interstitial (in-tur-STISH-ul) lung disease describes a group of lung disorders, most of which cause progressive scarring (fibrosis) of lung tissue. This eventually affects your ability to breathe and get enough oxygen into your bloodstream. Beyond this, the disorders vary greatly.
Most cases of interstitial lung disease develop gradually, but some come on suddenly. Doctors can sometimes pinpoint why some cases of interstitial lung disease occur, but many have no known cause...Read more here!