[Hypersensitivity pneumonitis induced by dust from an automatic bed cleaner].

A 49-year-old woman used an automatic bed cleaner on October 18, 1990. Eight hours later, she was admitted to a hospital complaining of coughing and fever. The chest X-ray film showed small granular shadows in both lower lung fields. After a few days of antibiotic therapy, these symptoms had disappeared. She used the bed cleaner again on the afternoon of November 15, 1990. The next day, she was admitted to our hospital because of coughing and fever. An environmental provocation test with the bed cleaner induced the same symptoms. Dust from the bed cleaner stimulated her lymphocytes. Hypersensitivity pneumonitis from the dust of a bed cleaner was diagnosed.