Hypersensitivity pneumonitis (HP) is also called extrinsic allergic alveolitis (EAA).
HP is a diffuse inflammatory disease of the lung parenchyma caused by an immunologic reaction to ...
Diagnosis criteria most widely used but not validated: (i) history and physical and pulmonary function tests (PFTs) indicating restriction or diffusion disease. DLco is the most frequently a...
Outpatient, except for acute pneumonitis cases and admission for workup (BAL, lung biopsy)
Every effort should be made to remove the patient completely from repeated exposure ...
Initial follow-up should be weekly to monthly, depending on severity and course.
Follow treatments with serial CXR, PFTs, and circulating antibod...
J67.9 Hypersensitivity pneumonitis due to unspecified organic dust
J67.0 Farmer’s lung
J67.2 Bird fancier’s lung
J67.8 Hypersensitivity pneumonitis due to other organic dusts
J67.5 Mushroom-wor...
Skin testing is not useful for the diagnosis of HP.
Diagnosis should be suspected in every patient with unexplained cough and dyspnea on exertion, functional impairment (restriction or ...
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