The Doctors TV show actually produced a great (and accurate) segment on a relatively new procedure called sialendoscopy. This procedure allows a surgeon to remove a stone that may be blocking your spit gland from draining saliva into the mouth. This is analogous to a kidney stone which blocks urine from draining from the kidney into the bladder resulting in painful swelling of the kidney (causing flank pain).
How does a person know if they have a salivary gland blockage due to a stone? There is a painful swelling located right in front and/or below the ear if the parotid gland is affected, or under the jawbone if the submandibular gland is blocked.
*This blog post was originally published at Fauquier ENT Blog*