Salivary Gland Stones: Painful Swelling and Treatment Options

Salivary gland stones are small mineral deposits that can block saliva flow, often causing pain and swelling around the jaw or under the tongue, especially during meals. Most cases are treatable, and modern minimally invasive techniques can often remove the blockage while preserving the gland.

Overview

Salivary gland stones, medically called sialolithiasis, are hardened deposits that form inside a salivary gland or its duct. Saliva normally flows through small ducts into the mouth, where it helps with chewing, swallowing, taste, and protection against tooth decay. When a stone blocks this flow, saliva can build up behind the blockage and cause swelling, pressure, and pain.

The condition most commonly affects the submandibular glands, which sit beneath the lower jaw and drain saliva under the tongue. This is partly because their saliva is thicker and the duct travels upward, making slow flow more likely. Stones can also form in the parotid glands in front of the ears and, less commonly, in the smaller salivary glands around the mouth.

Although salivary gland stones can be uncomfortable, they are usually benign and treatable. Many small stones pass with simple measures, while larger or deeper stones may need specialist care. Ear, nose, and throat doctors, oral and maxillofacial surgeons, radiologists, and dentists may all be involved depending on the case.

Symptoms of Salivary Gland Stones

The classic symptom is swelling that appears or worsens during meals. Eating, smelling food, or even thinking about food stimulates saliva production. If a duct is blocked, the gland tries to produce saliva but cannot drain normally, so pressure rises and pain may develop.

Symptoms can come and go, especially if the blockage is partial. Some people notice a small lump under the jaw or inside the mouth, while others feel aching in the cheek, jaw, or floor of the mouth. The affected area may feel firm or tender, and the mouth may feel dry if saliva flow is reduced.

Common signs and symptoms include:

• Swelling under the jaw, in the cheek, or beneath the tongue
• Pain or pressure that increases when eating
• Tenderness over a salivary gland
• Reduced saliva flow or dry mouth
• A bad taste in the mouth if infection is present
• Redness, warmth, or pus from the duct opening in more inflamed cases

If a blocked gland becomes infected, the condition is called sialadenitis. This may cause fever, increasing pain, redness of the skin, or pus draining into the mouth. These symptoms should be assessed by a doctor promptly, as infection usually needs targeted treatment.

Causes and Risk Factors

Salivary stones are usually made of minerals, mainly calcium salts, mixed with organic material from saliva. They may form when saliva becomes thick, stagnant, or concentrated, allowing small deposits to build up over time. In many people, there is no single clear cause.

Several factors can increase the chance of stone formation or gland blockage. Dehydration is one of the most common contributors because it reduces saliva volume and can make saliva thicker. Reduced food intake, mouth breathing, and some illnesses may also decrease saliva flow.

Possible risk factors include:

• Not drinking enough fluids, especially in hot weather or during illness
• Medications that reduce saliva, such as some antihistamines, antidepressants, diuretics, or blood pressure medicines
• Smoking or tobacco use, which may affect oral tissues and saliva
• Previous salivary gland inflammation or duct narrowing
• Dry mouth conditions, including autoimmune conditions such as Sjögren’s syndrome
• Reduced chewing or limited oral intake after surgery or illness

Salivary gland stones are not usually linked to cancer. However, persistent swelling of a salivary gland can have several causes, including stones, infection, autoimmune disease, cysts, or tumors. This is why a proper evaluation is recommended when symptoms do not quickly settle or keep returning.

Diagnosis

Diagnosis begins with a careful medical history and physical examination. The doctor may ask when swelling occurs, whether it is related to meals, how long it lasts, and whether there are signs of infection. During the examination, the gland may be gently felt from the outside and inside the mouth, and the duct opening may be checked for saliva flow, pus, or a visible stone.

Some stones near the duct opening can be felt or seen directly. Others are deeper in the duct or within the gland and require imaging. Ultrasound is commonly used because it is noninvasive and can often identify stones and gland inflammation. A CT scan may be helpful for small calcified stones or complex anatomy, while MRI or MR sialography can show ducts and soft tissues in selected cases.

Sialendoscopy may be used for both diagnosis and treatment. This technique involves placing a very thin endoscope into the salivary duct to view the duct system from the inside. It can help locate stones, narrow areas, or debris and may allow treatment during the same procedure.

Blood tests are not always needed for simple stones, but they may be considered if infection, autoimmune disease, or another medical condition is suspected. The goal of diagnosis is not only to confirm a stone but also to understand its size, location, and whether the gland is inflamed or infected.

Treatment Options

Treatment depends on the size and location of the stone, the severity of symptoms, and whether infection is present. Small stones near the duct opening may pass with conservative care. A doctor may recommend drinking more water, applying warm compresses, massaging the gland toward the duct opening, and using sugar-free sour candies or lemon drops to stimulate saliva flow. These measures should be gentle; forceful squeezing can worsen pain or inflammation.

If infection is suspected, treatment may include antibiotics prescribed by a doctor, pain relief, hydration, and gland massage when appropriate. It is important not to ignore fever, pus, or rapidly increasing swelling. An infected blocked gland can be painful, but it usually improves with timely medical care.

When a stone does not pass or causes repeated symptoms, minimally invasive procedures may be considered. Sialendoscopy allows the specialist to inspect the duct and remove or fragment certain stones using tiny instruments. In some cases, the duct opening may be widened, a small incision may be made inside the mouth to remove a stone, or lithotripsy techniques may be used to break the stone into smaller pieces.

Removal of the entire gland is now less common than in the past, because gland-preserving options are often available. However, surgery may still be needed for very large, deeply embedded, recurrent, or complicated stones, especially if the gland has been damaged by repeated infections. The treating specialist will explain the benefits, risks, anesthesia options, and recovery expectations for each approach.

Recovery and Follow-Up

Recovery varies according to the treatment used. After conservative treatment, symptoms may improve as the stone passes or the blockage clears. After a minor duct procedure or sialendoscopy, mild soreness, swelling, or a temporary change in saliva flow may occur for a short period. Patients are usually advised to stay well hydrated and follow the specific mouth care instructions provided by their clinician.

Follow-up is important if symptoms return, if swelling persists, or if infection was present. The doctor may want to confirm that the duct is draining well and that no additional stones remain. Some patients with narrow ducts or recurring stones may need longer-term monitoring or further treatment.

People should avoid trying to cut or puncture the duct at home, even if a stone seems close to the surface. The floor of the mouth contains delicate structures, including nerves, blood vessels, and salivary ducts. Safe removal should be performed by a trained professional using appropriate instruments and imaging when needed.

Prevention and Self-Care

Not all salivary gland stones can be prevented, but good saliva flow may reduce the chance of blockage. Drinking enough fluids, maintaining oral hygiene, and chewing sugar-free gum can support saliva production. Regular dental care is also helpful because oral infections and dry mouth can affect the salivary glands.

People who take medications that cause dry mouth should not stop them without medical advice. Instead, they can discuss symptoms with their doctor, dentist, or pharmacist. Sometimes changing the timing of medicine, adjusting treatment, or using saliva substitutes may be appropriate, depending on the person’s overall health.

Helpful self-care habits include:

• Drinking water regularly throughout the day
• Limiting tobacco and seeking support to quit if needed
• Using sugar-free sour candies or gum when recommended to stimulate saliva
• Practicing gentle gland massage from the back of the gland toward the mouth
• Brushing, flossing, and attending routine dental visits
• Seeking care early for repeated swelling or signs of infection

For patients traveling for diagnosis or treatment, coordinated care can make the process easier. Acibadem International’s multidisciplinary specialists and JCI-accredited hospitals evaluate and treat salivary gland stones for international patients, including access to ENT assessment, imaging, and minimally invasive treatment when appropriate.

When to See a Doctor

A doctor or dentist should assess swelling that appears repeatedly during meals, a painful lump under the jaw or in the cheek, or dry mouth that does not improve. Early evaluation may allow simpler treatment and can help prevent repeated infections or long-term gland irritation.

Medical care should be sought promptly if swelling becomes severe, fever develops, the skin over the gland becomes red and warm, or pus drains into the mouth. Difficulty swallowing, trouble breathing, or rapidly spreading swelling requires urgent medical attention. These situations are uncommon, but they need timely assessment.

Patients should also arrange a medical review if a known stone does not pass, symptoms return after treatment, or a salivary gland remains enlarged even when not eating. Persistent swelling is not always due to a stone, so imaging or specialist evaluation may be needed to identify the cause and guide safe treatment.

Frequently asked questions

Are salivary gland stones dangerous?

Most salivary gland stones are not dangerous and are benign mineral deposits. They can be painful and may lead to infection if saliva remains blocked. A medical evaluation is recommended if swelling is recurrent, worsening, or associated with fever or pus.

Can a salivary gland stone come out on its own?

Small stones near the duct opening may pass on their own with hydration, gentle massage, and saliva stimulation. Larger stones or stones located deeper in the duct usually need specialist treatment. Patients should not try to cut or remove a stone themselves.

Why does the swelling get worse when eating?

Eating stimulates the salivary glands to produce more saliva. If a stone blocks the duct, saliva cannot drain normally into the mouth, so pressure builds up behind the blockage. This causes swelling and pain that often peaks during or shortly after meals.

How are salivary gland stones removed?

Removal depends on the stone's size and position. Options include conservative measures, sialendoscopy with tiny instruments, a small incision inside the mouth, or other gland-preserving procedures. Rarely, the affected gland may need to be removed if stones are large, recurrent, or complicated.

Do antibiotics dissolve salivary stones?

Antibiotics do not dissolve salivary stones. They may be prescribed if the blocked gland becomes infected. The stone itself may still need to pass naturally or be removed with a procedure.

Can salivary gland stones return after treatment?

Yes, stones can recur, especially if a person has ongoing dry mouth, duct narrowing, or repeated gland inflammation. Staying hydrated, maintaining oral hygiene, and following medical advice may reduce the risk. Recurrent symptoms should be reviewed by an ENT specialist or other qualified clinician.

References

• American Academy of Otolaryngology-Head and Neck Surgery
• Merck Manual Professional Edition
• National Institute of Dental and Craniofacial Research
• Mayo Clinic
• Cleveland Clinic

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.