which averages 100 clinical articles per year ( fig. 1). Collectively, of approximately 2,650 clinical articles published so far, 32% are related to chemotherapeutic agents: bleomycin (226 papers); busulphan (58); cyclophosphamide (75); methotrexate (129); and nitrosoureas (46). Adverse pulmonary effects from: amiodarone (214 articles); ergolines (54); gold salts (133); minocycline (35); nitrofurantoin (135); nonsteroidal anti-inflammatory drugs (NSAIDs) (58); and sulphasalazine (22) point to all these drugs as being common offenders of the respiratory system, in addition to angiotensin-converting enzyme (ACE) inhibitors. On this basis, a brief historical perspective on DIRD is warranted.The first notice of adverse effects of drugs on the respiratory system dates back to the years 1920-1930, when it was realized that aspirin could induce severe asthma attacks and even death [2]. In the 1940s, the then newer antibiotic drugs were associated with allergic pneumonia with or without eosinophilia or angiitis [3,4], and gold was linked to the development of interstitial lung disease [5], although most of the literature on "gold lung" was published later [6][7][8].The The 1960-1969 decade was dominated by an overwhelming number of reports on nitrofurantoin lung. In addition, a worrisome picture of medication-induced pulmonary hypertension emerged, and an epidemic of this devastating illness in young females was ascribed to the appetite-suppressant, aminorex, which was withdrawn from the market [17]. For the first time, it became clear that one drug could induce more than one pattern of respiratory reactions. In the case of nitrofurantoin, these patterns included: acute allergic pneumonia, with or without eosinophilia in the blood [18]; subacute/chronic interstitial pneumonia, with or without a desquamative or eosinophilic pattern at histology [19][20][21]