Extrinsic allergic alveolitis (EAA) or hypersensitivity pneumonitis (HP)
Hypersensitivity pneumonitis or extrinsic allergic alveolitis is a widespread disease of the lungs, involving inflammation in both the small airways of the lung and the alveoli (air sacs). It is not dissimilar to asthma, but the latter involves the bronchi and bronchioles. It is...