Subjective complaint of dry mouth due to hyposalivation / changed salivary composition results in xerostomia. Hyposalivation is the objective sign which occurs due to decreased salivary flow. Both these conditions result in various oral manifestations like candidiasis, halitosis, dental caries, ascending (suppurative) sialadenitis. The etiology of oral dryness is multifactorial. The aim of this study is to investigate the diagnosis and provide a treatment algorithm for the oral dryness.