Hypersensitivity Pneumonitis - Extrinsic Allergic Alveolitis
Hypersensitivity pneumonitis (HP) (also called extrinsic allergic alveolitis) is a hypersensitivity syndrome that causes diffuse interstitial lung disease as a result of inhalation of antigenic organic particles. Nonspecific laboratory testing includes CBC, C-reactive protein (CRP), and IgE. Serum precipitating antibody testing is selected based on suspected exposure.
Last Update: September 2018