A blocked salivary gland typically feels like a firm, tender swelling that appears suddenly on one side of your face or under your jaw, and it often gets noticeably worse when you eat. The hallmark sensation is a dull ache or pressure that sharpens into real pain the moment you start chewing or even think about sour food. That’s because your brain signals the gland to produce saliva, but the blockage prevents it from draining, so pressure builds rapidly inside the gland.
Where You’ll Feel It
The location of the swelling depends on which of your three major salivary glands is affected. The submandibular glands, which sit just below the jawbone toward the back of your mouth, are the most commonly blocked. A stone here usually starts as a painful lump under the tongue or along the inner floor of your mouth. You might notice it first with your tongue before you can see anything in the mirror.
The parotid glands sit in front of and just below each ear. When one of these is blocked, the swelling appears in your cheek or near your earlobe, sometimes making it look like you have the mumps on one side. The sublingual glands, located directly under your tongue, are blocked far less often, but when they are, you’ll feel fullness or a visible bulge on the floor of your mouth.
The “Mealtime Syndrome”
The most distinctive feature of a blocked salivary gland is pain that flares up when you eat, smell food, or even imagine eating something sour. Your gland tries to flood saliva into your mouth, but the stone or blockage acts like a dam. Pressure builds inside the duct within seconds, producing a sharp, sometimes intense ache that can radiate into your jaw, ear, or neck. The swelling may visibly increase during a meal.
Between meals, the discomfort often fades to a low-grade ache or disappears entirely as the trapped saliva slowly seeps past the obstruction. This cycle of swelling and relief tied to eating is so characteristic that it’s often the single detail that points to a blockage rather than another cause of facial swelling.
What Else You Might Notice
Beyond the swelling and pain, a blocked gland can produce a few less obvious symptoms. Your mouth may feel drier on the affected side because saliva isn’t reaching it normally. Some people notice a slightly salty or metallic taste, especially if a small amount of saliva manages to push past the blockage intermittently. If you run your tongue along the floor of your mouth or inside your cheek, you might feel a small, hard pebble. Most salivary stones are around 5 millimeters or smaller, roughly the size of a peppercorn, though stones over 10 millimeters are occasionally found.
Not every stone causes symptoms. Small ones can sit quietly in a duct without fully blocking it. You might not know it’s there until it shifts position or grows large enough to obstruct flow.
How to Check for a Lump
You can gently feel for a blockage yourself. For the submandibular gland, place one finger inside your mouth on the floor beneath your tongue while pressing upward with your other hand under your jaw. A stone will feel like a small, hard bead between your fingers. For the parotid gland, press gently against the side of your face just in front of your ear, pushing the gland against your jawbone. A blocked gland often feels firmer and more tender than the opposite side. Clench your teeth to tense your jaw muscle, which makes the border of the parotid gland easier to locate just behind it.
Blockage vs. Infection
A simple blockage causes swelling and meal-related pain, but it can progress. When saliva stays trapped, bacteria that would normally be flushed out of the duct begin to multiply. This secondary infection, called sialadenitis, adds a new layer of symptoms: the skin over the gland may turn red and feel warm, the pain becomes constant rather than meal-related, and foul-tasting pus may drain into your mouth when you press on the gland. Fever is a clear sign that infection has set in.
If you have only the intermittent swelling-with-meals pattern and no fever, you’re likely dealing with a straightforward blockage. If the area becomes hot, constantly painful, or you develop a fever, the blockage has likely led to infection.
Relieving a Minor Blockage at Home
Many small stones pass on their own with a little help. Staying well hydrated thins your saliva and keeps it flowing. Sucking on something sour, like lemon drops or sour candy, stimulates a surge of saliva production that can help push a small stone through the duct. Warm compresses held against the swollen area for 10 to 15 minutes several times a day can also loosen things up.
Gentle massage makes a real difference. For the parotid gland, use four fingers to massage the area in front of your ear in small circles, about 10 repetitions. For the submandibular gland, press your thumbs under your chin on both sides, also about 10 repetitions. For the sublingual area, run your thumbs along the underside of your jawline from below your ears toward your chin. Doing this routine for about two minutes, three times a day, encourages the stone to move toward the duct opening where it can pass into your mouth.
What Happens if It Doesn’t Clear
A blockage that keeps coming back or never fully resolves can cause real damage over time. Chronic obstruction slowly destroys the saliva-producing cells inside the gland, replacing functional tissue with scar tissue. This leads to permanent shrinkage and reduced saliva output from that gland. Repeated infections are the more immediate concern, since each episode of trapped bacteria can lead to abscess formation in severe cases.
If home measures don’t move the stone within a few days, or if symptoms keep recurring, imaging can confirm the diagnosis. Ultrasound is the standard first step because it’s quick, painless, and good at spotting stones. For more complex cases, MRI with a specialized salivary duct imaging technique has largely replaced the older method of injecting dye into the duct. CT scans are reserved mainly for suspected complications like abscess. Small, accessible stones can often be milked out of the duct manually or removed through a minor procedure inside the mouth, while larger stones (generally above 8 millimeters) may need a small surgical incision.