Salivary Stones: Symptoms, Causes, and Home Treatment That Actually Works

A sharp, throbbing pain under your jaw that flares up right when you start eating is one of the most common signs of a salivary stone. It’s an oddly specific symptom, but it makes sense once you understand what’s happening inside your mouth: a small mineral deposit is blocking the very duct your saliva needs to flow through.

What Are Salivary Stones?

Salivary stones, medically known as sialoliths, are hardened mineral deposits that form inside the salivary glands or their ducts. The condition itself is called sialolithiasis. Despite the name, these aren’t rocks in the traditional sense — they’re clumps of calcium and other minerals that build up over time and can partially or fully block the flow of saliva.

Sialolithiasis can technically affect any of the salivary glands, but the vast majority of cases involve the submandibular glands, located along the inner jawline. This is because saliva from these glands is thicker and flows upward against gravity, making it more likely for minerals to settle and harden. Far fewer cases affect the parotid glands near the ears, and stones in the sublingual glands under the tongue are rare.

Stones can range dramatically in size — some are as small as a grain of sand and cause no symptoms at all, while others grow to the size of a pea or larger and cause significant discomfort.

Symptoms of Salivary Stones

The classic symptoms of a salivary stone include:

• Pain and swelling in the affected gland, often under the jaw or in front of the ear
• Pain that spikes around mealtimes — since eating triggers saliva production, a blocked duct causes saliva to back up and the gland to swell painfully
• A tender lump that can sometimes be felt in the jaw or neck
• Dry mouth or reduced saliva flow on the affected side
• Bad breath, caused by reduced saliva and a buildup of bacteria
• Signs of infection — such as fever, pus, or worsening redness — if saliva trapped behind the stone becomes infected

Small stones may cause no noticeable symptoms at all and are sometimes discovered only during a dental exam or imaging for an unrelated issue.

What Causes Salivary Stones?

The exact cause of salivary stone formation isn’t fully understood, but several contributing factors are well recognized:

• Dehydration, which thickens saliva and makes mineral buildup more likely
• Reduced saliva flow, whether from not eating enough, certain medications, or underlying health conditions
• Certain medications, including some blood pressure drugs and antihistamines, which can dry out the mouth
• Anatomical factors, such as the natural shape and angle of the submandibular duct, which make it more prone to blockages
• Changes in saliva composition, including higher calcium content in some people

Notably, no specific food or drink has been shown to directly cause salivary stones — the main established risk factors are dehydration and anything that reduces saliva flow.

Home Treatment for Salivary Stones

For small to moderate stones, especially those near the opening of the duct, home care is often the first line of treatment and can be surprisingly effective.

When to See a Doctor

Home remedies don’t always work, and some stones need professional treatment. See a doctor or dentist if you notice:

• Pain or swelling that doesn’t improve with home care
• Fever, pus, or other signs of infection
• A stone that keeps recurring
• Swelling that’s severe or rapidly worsening

A healthcare provider may use imaging (ultrasound, CT, or sialendoscopy) to locate the stone, and may be able to massage or manipulate it out using specialized tools. Larger stones that don’t respond to conservative treatment sometimes require minimally invasive procedures, such as shock wave therapy, or in some cases surgical removal.

The Bottom Line

Salivary stones are uncomfortable but rarely a medical emergency. Many small stones can be managed and even dislodged entirely with simple home measures like hydration, citrus, warmth, and gentle massage. If the pain persists, worsens, or comes with signs of infection, it’s time to get it checked by a professional rather than continuing to manage it alone.