A blocked salivary gland usually means a stone or thick mucus has plugged the duct that carries saliva into your mouth. Most cases can be managed at home with hydration, warm compresses, sour lozenges, and gentle massage. You should go to a hospital or urgent care when swelling is severe, you have fever, the gland is red and hot, or symptoms do not improve within a few days.
What Causes a Blocked Salivary Gland?
Saliva flows from three main pairs of glands into your mouth: the parotid glands near your ears, the submandibular glands under your jaw, and the sublingual glands under your tongue. Each gland connects to the mouth through a narrow tube called a duct. When that duct narrows or plugs, saliva backs up and the gland swells.
The most common cause is a sialolith, a calcified stone made mostly of calcium phosphate. Submandibular stones are the most frequent because that duct runs upward and is longer and wider than the others, making it easier for minerals to settle. Stones can be as small as a grain of sand or as large as a pea.
Other causes include thick or dehydrated saliva, duct strictures from scarring, mucus plugs, and infections. Less often, autoimmune conditions like Sjögren’s syndrome cause chronic gland swelling. In rare cases, a tumor in the gland or duct can block flow. That is why persistent swelling that does not resolve deserves medical evaluation.
Certain medications that reduce saliva production, such as some antihistamines, antidepressants, and diuretics, can make blockage more likely. Smoking and dehydration also raise risk.
How To Treat A Blocked Salivary Gland at Home
Home care works best for mild, intermittent swelling without signs of infection. The goal is to thin saliva, encourage flow, and reduce inflammation.
- Drink water frequently. Aim for steady sips throughout the day. Staying hydrated thins saliva and helps it move through the duct.
- Apply warm compresses. Hold a warm, damp washcloth against the swollen gland for 10 to 15 minutes several times a day. Heat increases blood flow and can relax the duct.
- Use sour stimulation. Sucking on lemon drops, sour candy, or drinking lemon water triggers saliva production. The increased flow can push a small stone or plug out.
- Massage gently. Using clean fingers, massage the gland from the back toward the duct opening in your mouth. This can help move saliva forward. Stop if it causes sharp pain.
- Try over-the-counter pain relief. Ibuprofen or acetaminophen can ease discomfort and reduce swelling. Follow label directions. People with kidney disease, stomach ulcers, or who take blood thinners should check with a clinician before using ibuprofen.
- Avoid alcohol and caffeine. Both can dehydrate you and thicken saliva.
These steps are widely recommended by clinicians, though formal clinical trials comparing them head-to-head are limited. The physiological rationale is sound: saliva flow is the primary mechanism that clears a duct, so anything that increases flow or reduces viscosity helps.
When Should You Go to the Hospital or Urgent Care?
Go to urgent care or an emergency department if you have any of the following:
- Fever of 100.4°F (38°C) or higher
- Rapidly increasing swelling under your jaw or in your neck
- Swelling that makes it hard to swallow or breathe
- Red, hot, or shiny skin over the gland
- Pus draining into your mouth
- Severe pain that does not respond to over-the-counter medication
- Swelling that has not improved after 5 to 7 days of home care
- Recurring episodes of swelling
Difficulty breathing or swallowing is a medical emergency. Call 911 or go to the nearest emergency department immediately. Swelling in the floor of the mouth or neck can compress the airway.
Bacterial infection of a salivary gland, called sialadenitis, often needs antibiotics. If the infection is severe or an abscess forms, you may need IV antibiotics and drainage. These cannot be managed at home.
What Happens at the Doctor or Hospital?
A clinician will examine your mouth and neck, feeling for stones and checking for tenderness. They may press on the gland to see if saliva or pus comes out of the duct opening.
Imaging is often the next step. A dental X-ray or a standard X-ray can sometimes show a stone, but many stones are not visible on plain film. A CT scan or ultrasound is more reliable for detecting stones and evaluating the gland. Ultrasound is often used first because it does not involve radiation.
If a stone is found near the duct opening, a doctor may be able to remove it in the office with a small instrument after numbing the area. Larger or deeper stones may require a procedure called sialendoscopy, where a tiny camera and tools are guided into the duct. Some stones need surgical removal.
If infection is present, antibiotics are prescribed. If an abscess has formed, it may need to be drained surgically.
Can a Blocked Salivary Gland Clear on Its Own?
Yes. Small stones and mucus plugs often pass on their own, especially with good hydration and saliva stimulation. Many people notice a sudden gush of saliva and relief of swelling when the blockage clears.
However, stones can recur. If you have had one, you are more likely to form another. Staying hydrated and avoiding medications that dry your mouth when possible may reduce the chance.
If blockage keeps coming back, you may need a procedure to widen the duct or remove the gland. This is uncommon but sometimes necessary for chronic cases.
What Is the Difference Between a Stone and an Infection?
A stone causes intermittent swelling that worsens before meals and improves after. The gland may swell, then go down. Pain is often tied to eating.
An infection causes constant swelling, pain, redness, and often fever. The gland may be tender to touch, and pus may drain into the mouth. Infection can develop when a stone blocks flow and bacteria grow behind it.
Both can happen together. A stone can cause an infection, and an infection can cause swelling that feels like a blockage.
Can You Prevent a Blocked Salivary Gland?
There is no guaranteed way to prevent stones, but you can lower your risk.
- Drink enough water daily. Urine that is pale yellow suggests good hydration.
- Limit medications that dry your mouth when possible, but never stop a prescribed medication without talking to your doctor.
- If you are prone to stones, your doctor may suggest staying well hydrated and using sour lozenges regularly.
- Avoid smoking.
- Practice good oral hygiene.
Some clinicians recommend lemon or sour candy for people with recurrent stones, but evidence for prevention specifically is limited. The mainstay is hydration.
What Are the Risks of Waiting Too Long?
Waiting is usually safe for mild, intermittent swelling. But if an infection develops, it can spread. Cellulitis and abscesses in the neck can become serious. In rare cases, infection can spread to deep spaces in the neck and become life-threatening.
If you have diabetes, a weakened immune system, or take immunosuppressant medications, you are at higher risk for severe infection. Seek care sooner rather than later.
Frequently Asked Questions
How long does a blocked salivary gland take to go away?
Mild blockages often clear within a few days to a week with home care. If swelling lasts longer than 5 to 7 days or worsens, see a doctor.
When should I go to the ER for a blocked salivary gland?
Go to the ER if you have trouble breathing or swallowing, a fever above 100.4°F (38°C), or rapidly increasing neck swelling. These signs suggest a serious infection or airway risk.
Can I remove a salivary gland stone at home?
No. Do not try to poke or cut a stone out yourself. You can encourage it to pass with hydration, sour lozenges, and massage, but removal should be done by a clinician.
What does a blocked salivary gland feel like?
It typically feels like a dull ache or swelling under your jaw or near your ear that worsens before meals. The gland may swell, then shrink after eating.

