Hypersensitivity pneumonitis remains an important in-
dustrial disease in mushroom workers. It has a signifi -
cant morbidity, and early diagnosis and removal from
exposure to the antigen are critically important in its
management. Recently, several new allergens have been
described, particularly those from mushroom species
originating in the Far East, which are of clinical signifi -
cance to workers occupationally exposed to such aller-
gens in cultivation, picking, and packing of commercial
mushroom crops. Importing of exotic mushrooms in-
cluding Shiitake is common in EU countries, and some
of the exotic species of mushrooms are cultivated for lo-
cal markets. This practice may contribute to an increase
in clinical cases of mushroom hypersensitivity pneumo-
nitis. This update reviews the recent literature and exam-
ines changing trends of mushroom worker’s lung, with
increased movement of commercial product and labour
markets worldwide.