What is Salivary gland stones?

Salivary gland stones (sialolithiasis) form when minerals in saliva crystallise into a small, hard stone within one of the salivary glands or their ducts, most commonly under the jaw. This can block the flow of saliva, causing pain and swelling, especially around mealtimes when saliva production increases.

Stones vary in size, and while small ones may pass on their own, larger stones can cause a build-up of saliva behind the blockage, leading to recurrent swelling, discomfort, and sometimes infection of the gland.