Why is illness duration significant in the history of restrictive lung disease?

Updated: Sep 16, 2020
  • Author: Jonathan Robert Caronia, DO; Chief Editor: John J Oppenheimer, MD  more...
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Acute disorders last days to weeks and include acute interstitial pneumonitis, eosinophilic pneumonia, and diffuse alveolar hemorrhage. [14]

Subacute disorders lasting weeks to months include sarcoidosis, drug-induced interstitial lung disease, alveolar hemorrhage syndrome, cryptogenic organizing pneumonia (COP), and connective-tissue diseases. [15]

Chronic cases lasting months to years include idiopathic pulmonary fibrosis (IPF), sarcoidosis, and pulmonary Langerhans cell histiocytosis. [15]

Hypersensitivity pneumonitis and COP may manifest as acute, subacute, or chronic disease. [14]

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