_:vb50936396 . _:vb50936396 "An idiopathic interstitial pneumonia characterized by lung inflammation and scarring that obstructs the small airways and air sacs of the lungs (alveoli). A flu-like illness, with a cough, fever, a feeling of illness (malaise), fatigue, and weight loss, heralds the onset in about 50% of people. Frequent presence of crackling sounds (called Velcro crackles) when the doctor listens with a stethoscope."^^ . _:vb50936396 . _:vb50936396 . _:vb50936396 . _:vb50936396 . _:vb50936396 . _:vb50936396 "url:http://www.merck.com/mmhe/sec04/ch050/ch050b.html?qt=idiopathic%20interstitial%20pneumonia&alt=sh"^^ . _:vb50936396 "url:https://www.ncbi.nlm.nih.gov/pubmed/11790668"^^ .