What causes painful swelling under my chin while eating?

Complaints about salivary gland stones vary according to the location of the stone, the degree of obstruction, the rate of salivation, and whether there is inflammation in the gland tissue. The typical complaint is sudden swelling and pain in the gland where the stone is located, that is, under the chin, under the tongue or in front of the ear, especially when a food that increases salivation such as lemon is eaten. If there is no complete blockage in the canal, the swelling will disappear within a couple of hours. Then, when a food that stimulates the salivary gland is eaten, the complaint reappears.


Source: http://www.kbb.org.tr