“…Apart from the 'natural' glandular atrophy that occurs in the elderly, environmental factors such as temperaturecontrolled air, screen handling, ozone, dust, solvent vapours, contraceptives, beta-blockers, and psychotropic drugs are known to induce sicca symptoms [1,2]. A recent study demonstrated an association with chronic rhinosinusitis [3]. Diabetes mellitus, thyroid diseases, and autoimmunity, on the other hand, consistently caused xerostomia/xerophthalmia [2,4,5].…”