Suberosis also known as corkhandler disease or corkworker lung is a type of hypersensitivity pneumonitis usually caused by the fungus Penicillium glabrum (formerly called Penicillium frequentans) from exposure to moldy cork dust. Chrysonilia sitophila, Aspergillus fumigatus, uncontaminated cork dust, and Mucor macedo may also have significant roles in the pathogenesis of the disease.