The exact cause of<unk>  is unknown. However, associated factors could be due largely to smoking. Sometimes, the medicines used to treat<unk>  arthritis, especially methotrexate, may result in<unk>  disease. Prevention: * Stop smoking: Chemicals found in cigarettes can irritate already delicate<unk>  tissue, leading to further complications. * Having regular checkups: The doctor could listen to<unk> s and monitor breathing, because<unk>  problems that are detected early can be easier to treat.
Rheumatoid lung disease
Mineral dust airway disease
Alcoholic lung disease
Allergic bronchopulmonary aspergillosis
Idiopathic pulmonary fibrosis
Bronchiectasis
Alveolar lung disease
Plastic bronchitis