“…Several authors have postulated contributory causes such as straining or coughing during anaesthesia leading to retrograde airflow through Stensen’s duct,10 long-duration surgery,2 head positioning in the prone, lateral or sitting position,2 10–12 use of perioperative drugs such as atropine, succinylcholine, glycopyrrolate, benzodiazepines or morphine, preoperative or perioperative dehydration, and other conditions precipitating obstruction or hyposecretion of the salivary ducts 2 7 10–12. The literature also suggests that increased body habitus,6 malnutrition, bulimia/anorexia, alcoholism, Sjogren’s syndrome, HIV (and other immunosuppressive states), sialolithiasis, ductal stenosis and perioral trauma can contribute to patient susceptibility to anaesthesia mumps 8.…”