But, my mother had idiopathic
pulmonary fibrosis. Idiopathic means cause unknown.
And many times, doctors cannot tell a patient, what caused the pulmonary fibrosis. My mother had a lung biopsy. Even with the lung biopsy, doctors could not determine, just what had caused her lung disease. She had worked around metal dust for 15 yrs. They could not determine, if that caused her pulmonary fibrosis. According to my research, many things could possibly cause pulmonary fibrosis.