Hypersensitivity Pneumonitis
What every physician needs to know: Hypersensitivity pneumonitis (HP) is a respiratory disease caused by an exaggerated immune response to inhaled antigens, usually organic in nature. In Europe, it is often referred to as “extrinsic allergic alveolitis.” It can present as acute HP, characterized by acute bouts of fever or dyspnea three to eight hours…
