What are blocked saliva gland symptoms?
Typical symptoms include swelling under the jaw or near the ear during meals, pain while chewing, dry mouth on one side, foul taste, pus from the duct, and recurrent sialadenitis.
A blocked saliva gland means saliva cannot drain normally from a major salivary gland into the mouth. The blockage may sit in the duct itself or deeper within the gland. Patients often describe swelling under the jaw or near the ear that worsens during meals, pain while chewing, dry mouth on one side, or repeated infections of the same gland.
Common causes of salivary blockage
The most common cause is a salivary stone (sialolith), especially in the submandibular gland and Wharton's duct. Other causes include parotid duct stones, duct stenosis or narrowing, mucus plugs, scarring after infection, low saliva flow from dehydration or medicines, and autoimmune inflammation such as Sjögren's syndrome.
Blocked saliva gland symptoms
- Swelling under the jaw or in the cheek that becomes worse around meals
- Pain or pressure while eating, chewing, or tasting sour foods
- Dry mouth or reduced saliva from one duct opening
- Foul taste, pus in the mouth, fever, or tenderness if infection develops
- Recurrent salivary gland swelling that improves temporarily after antibiotics
How doctors confirm the diagnosis
An ENT examination identifies the affected gland and checks the duct opening inside the mouth. Ultrasound is often the first imaging test because it can detect stones, duct widening, abscess, and gland inflammation. MRI sialography, CT, or diagnostic sialendoscopy may be used when the blockage is small, deep, recurrent, or not clearly seen on ultrasound.
Treatment options
Mild temporary blockage may improve with hydration, warm compresses, gentle gland massage, and sugar-free sour lozenges to stimulate saliva flow. If there is infection, antibiotics may be needed first. Persistent stones, strictures, or repeated blocked saliva gland episodes often need sialendoscopy to clear the duct, remove stones, dilate narrowing, or wash out debris.
When sialendoscopy is useful
Sialendoscopy is helpful when symptoms keep returning despite medication, when imaging shows a duct stone, or when a narrowed duct is causing obstructive sialadenitis. The scope passes through the natural duct opening inside the mouth, so many patients can avoid an external incision or gland removal.
When to see a specialist
See an ENT specialist if swelling happens repeatedly, if symptoms are meal-triggered, or if you have fever, pus, or severe tenderness. You can also read about salivary gland stone symptoms, salivary stone treatment options, or book an appointment with Dr Varun Rai at Sir Ganga Ram Hospital, Delhi.
Frequently asked questions
What causes blockage in a salivary gland?
Common causes include salivary stones, duct stenosis, mucus plugs, scarring after infection, dehydration, and autoimmune inflammation affecting saliva flow.
How is a blocked salivary duct treated?
Treatment depends on the cause. Small plugs may improve with hydration and massage, while persistent stones or strictures often need sialendoscopy to clear or widen the duct.