This document discusses various drug-induced pulmonary diseases. It notes that drug-induced pulmonary diseases can affect any part of the respiratory system and have non-specific pathological findings. Several drugs are known to cause apnea by depressing the central nervous system or blocking respiratory muscles. Bronchospasm is usually only induced in patients with pre-existing lung conditions and is caused by drugs like beta blockers and aspirin. ACE inhibitors are a common cause of persistent cough. Narcotic analgesics frequently cause non-cardiogenic pulmonary edema. Many cancer chemotherapy drugs and other medications have been associated with pulmonary fibrosis.