Diseases Home > Causes of Pulmonary Fibrosis
Pulmonary fibrosis is a condition that can be caused by several things. The most common cause appears to be long-term exposure to occupational and/or environmental inhalants. Radiation from cancer treatment and certain medications may also lead to pulmonary fibrosis. In addition, there are many other situations in which the pulmonary fibrosis causes are not known.
- Asbestos fibers (asbestosis)
- Silica dust (silicosis)
- Other metal dust in mines or factories
- Fumes found on farms, such as from moldy hay (farmer's lung)
- Certain drugs, such as:
- Nitrofurantoin (Furadantin®, Macrodantin®, Macrobid®) and sulfasalazine (Azulfidine®), which are medicines used to treat ulcerative colitis, Crohn's disease, urinary tract infections, and rheumatoid arthritis
- Medicines to keep your heartbeat regular, such as amiodarone (Cordarone®) or propranolol (Inderal®)
- Chemotherapy or cancer medicines, such as methotrexate (Rheumatrex®), cyclophosphamide (Cytoxan®), and bleomycin (Blenoxane®)
- Radiation from cancer treatment.