hypersensitivity pneumonitis (MONDO_0017853) (HP) is a pulmonary disease with symptoms of dyspnea and cough resulting from the inhalation of an antigen to which the subject has been previously sensitized. Also known as: HP, allergic form of pneumonitis, allergic pneumonitis, alveolitis, exogen allergic alveolitis, extrinsic allergic alveolitis.