Question: What causes Sialadenitis ?
Answer: What causes sialadenitis? Sialadenitis usually occurs after hyposecretion (reduced flow from the salivary glands) or duct obstruction, but may develop without an obvious cause. Saliva flow can be reduced in people who are sick or recovering from surgery, or people who are dehydrated, malnourished, or immunosuppressed. A stone or a kink in the salivary duct can also diminish saliva flow, as can certain medications (such as antihistamines, diuretics, psychiatric medications, beta-blockers, or barbiturates). It often occurs in chronically ill people with xerostomia (dry mouth), people with Sjogren syndrome, and in those who have had radiation therapy to the oral cavity. The most common causative organism in the infection is Staphylococcus aureus; others include streptococci, coliforms, and various anaerobic bacteria. Although less common than bacteria, several viruses have also been implicated in sialadenitis. These include the mumps virus, HIV, coxsackievirus, parainfluenza types I and II, influenza A, and herpes.
Source: GARD