Sialadenitis
What is Sialadenitis?
Sialadenitis is inflammation of the salivary glands. These glands produce saliva to help you chew, swallow, and digest food. The condition most often affects the parotid glands in front of your ears and the submandibular glands under your jaw.
Bacteria or viruses can cause sialadenitis when they infect the glands. Blockages from stones or thick saliva can also trigger inflammation. The condition may be acute, meaning it comes on suddenly, or chronic, developing over time. Most cases resolve with treatment, but some people experience recurring episodes.
Sialadenitis ranges from mild discomfort to severe infection. Early detection helps prevent complications like abscesses or permanent gland damage. Blood tests can detect elevated amylase levels that indicate salivary gland inflammation.
Symptoms
- Swelling and pain in the cheek, under the jaw, or in front of the ear
- Tenderness and warmth over the affected gland
- Difficulty opening your mouth fully
- Dry mouth or decreased saliva production
- Unpleasant taste in the mouth
- Fever and chills in acute bacterial infections
- Redness of the skin over the swollen area
- Pus draining into the mouth from the gland duct
- Pain that worsens when eating or thinking about food
- Visible lump or mass in the neck or face
Some people with chronic sialadenitis experience mild symptoms that come and go. Others may have persistent swelling without significant pain.
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Causes and risk factors
Bacterial infections are the most common cause of acute sialadenitis. Staphylococcus aureus and other bacteria travel up the salivary ducts when saliva flow decreases. Dehydration, certain medications, and poor oral hygiene increase bacterial infection risk. Salivary stones can block ducts and create an environment where bacteria thrive. Viral infections like mumps, Epstein-Barr virus, and HIV can also inflame salivary glands.
Risk factors include dehydration, advanced age, recent surgery, and chronic illness. Medications that reduce saliva production, including antihistamines and blood pressure drugs, raise your risk. Poor dental hygiene allows bacteria to multiply near gland openings. Autoimmune conditions like Sjögren syndrome cause chronic inflammation. Malnutrition and conditions that weaken your immune system make infections more likely.
How it's diagnosed
Doctors diagnose sialadenitis through physical examination of the swollen gland. They may gently massage the gland to check for pus discharge from the duct opening. Imaging tests like ultrasound, CT scans, or MRI can reveal stones, abscesses, or other blockages. Culture of any discharge helps identify the specific bacteria causing infection.
Blood tests can detect elevated amylase levels that indicate salivary gland inflammation. When salivary gland cells are damaged by infection or blockage, they release amylase into your bloodstream. Rite Aid offers amylase testing as an add-on to help monitor salivary gland health. Your doctor may order additional blood work to check for infection markers and rule out other conditions.
Treatment options
- Drink plenty of water to stay hydrated and promote saliva flow
- Apply warm compresses to the affected area several times daily
- Gently massage the gland to help clear blockages
- Suck on sour candies or lemon drops to stimulate saliva production
- Practice good oral hygiene with regular brushing and flossing
- Take antibiotics if your doctor diagnoses bacterial infection
- Use over-the-counter pain relievers for discomfort and fever
- Avoid smoking and alcohol, which reduce saliva production
- Eat a balanced diet to support immune function
- Consider surgical removal of stones or abscesses in severe cases
Need testing for Sialadenitis? Add it to your panel.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Bacterial infection is the most common cause of acute sialadenitis. Bacteria travel up the salivary ducts when saliva flow decreases due to dehydration, medications, or blockages. Viral infections and salivary stones can also trigger the condition.
Most cases of acute sialadenitis improve within a week with proper treatment. Bacterial infections typically respond to antibiotics within 3 to 5 days. Chronic sialadenitis may require longer treatment and can recur if underlying causes are not addressed.
Mild cases sometimes resolve without medical treatment if you stay hydrated and maintain good oral hygiene. However, bacterial infections usually require antibiotics to prevent complications. Untreated sialadenitis can lead to abscesses, permanent gland damage, or spread of infection.
Serum amylase testing can detect elevated levels that indicate salivary gland inflammation. When gland cells are damaged by infection or blockage, they release amylase into your bloodstream. Your doctor may also order white blood cell counts and other infection markers.
Sialadenitis itself is not contagious, but some viruses that cause it can spread between people. Mumps and other viral infections can transmit through respiratory droplets. Bacterial sialadenitis develops from your own oral bacteria and does not spread to others.
Avoid dry, hard, or difficult-to-chew foods that strain inflamed glands. Skip salty or spicy foods that may irritate the condition. Instead, eat soft, moist foods and drink plenty of water to keep saliva flowing and support healing.
Yes, dehydration is a major risk factor for sialadenitis. When you are dehydrated, your saliva production decreases and becomes thicker. This creates an environment where bacteria can travel up the ducts more easily and cause infection.
Stay well hydrated by drinking water throughout the day. Practice excellent oral hygiene with regular brushing and flossing. Stimulate saliva flow by chewing sugar-free gum or sucking on sour candies. Address underlying conditions like autoimmune disorders or medication side effects with your doctor.
See a doctor if you have painful swelling in your face or neck, especially with fever. Seek immediate care if you have difficulty swallowing or breathing. If symptoms do not improve within 2 to 3 days of home care, you need medical evaluation.
Untreated sialadenitis can progress to abscess formation that requires surgical drainage. The infection can spread to surrounding tissues or into your bloodstream. Chronic or recurrent sialadenitis may cause permanent damage to salivary glands and reduced saliva production.