Hypersensitivity pneumonitis and pulmonary vasculitis with eosinophilia in a patient taking an L-tryptophan preparation
Alveolitis, Extrinsic Allergic
A case of hypersensitivity pneumonitis with peripheral blood eosinophilia associated with L-tryptophan ingestion is discussed. L-Tryptophan should be added to the list of drugs associated with pulmonary infiltrates and the eosinophilia syndrome. The combination of hypersensitivity pneumonitis and vasculitis with eosinophilia in lung biopsies is very unusual and suggests an L-tryptophan drug reaction.