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Salivary gland infections

  • Definition
    • Salivary gland infections affect the glands that produce spit (saliva). The infection may be due to bacteria or viruses.

      There are 3 pairs of major salivary glands:

      • Parotid glands: These are the 2 largest glands. One is located in each cheek over the jaw in front of the ears. Inflammation of 1 or more of these glands is called parotitis, or parotiditis.
      • Submandibular glands: These 2 glands are located just under both sides of the lower jaw and carry saliva up to the floor of the mouth under the tongue.
      • Sublingual glands: These 2 glands are located just under the front most area of the floor of the mouth.

      All of the salivary glands empty saliva into the mouth. The saliva enters the mouth through ducts that open into the mouth in different places.

  • Alternative Names
    • Parotitis; Sialadenitis

  • Causes
    • Salivary gland infections are somewhat common, and they can return in some people.

      Viral infections such as mumps often affect the salivary glands. (Mumps most often involves the parotid salivary gland). Mumps is a rare problem today because of the MMR vaccine.

      Bacterial infections are most often the result of a:

      • Blockage from salivary duct stones
      • Poor cleanliness in the mouth (oral hygiene)
      • Low amounts of water in the body, most often while in the hospital
      • Smoking
      • Chronic illness
  • Symptoms
  • Exams and Tests
    • Your health care provider or dentist will do an exam to look for enlarged glands. You may also have pus that drains into the mouth. The gland is most often painful.

      A CT scan, MRI scan or ultrasound may be done if the doctor suspects an abscess or to look for stones.

  • Treatment
    • In some cases, no treatment is needed.

      Treatment from your provider may include:

      • Antibiotics if you have a fever or pus drainage, or if the infection is caused by bacteria. Antibiotics are not useful against viral infections.
      • Surgery or aspiration to drain an abscess if you have one.

      Self-care steps you can take at home to help with recovery include:

      • Practice good oral hygiene. Brush your teeth and floss well at least twice a day. This may help with healing and prevent an infection from spreading.
      • Rinse your mouth with warm salt water rinses (one half teaspoon or 3 grams of salt in 1 cup or 240 milliliters of water) to ease pain and keep the mouth moist.
      • Stop smoking if you are a smoker, to speed up healing.
      • Drink lots of water and use sugar-free lemon drops to increase the flow of saliva and reduce swelling.
      • Massaging the gland with heat.
      • Using warm compresses on the inflamed gland.
  • Outlook (Prognosis)
    • Most salivary gland infections go away on their own or are cured with treatment. Some infections will return. Complications are not common.

  • Possible Complications
  • When to Contact a Medical Professional
    • Call your provider if:

      • You have symptoms of a salivary gland infection.
      • You've been diagnosed with a salivary gland infection and symptoms get worse.
      • Get medical help right away if you have a high fever, trouble breathing, or swallowing problems.
  • Prevention
    • In many cases, salivary gland infections cannot be prevented. Good oral hygiene may prevent some cases of bacterial infection.

  • References
    • Elluru RG. Physiology of the salivary glands. In: Flint PW, Haughey BH, Lund LJ, et al, eds. Cummings Otolaryngology: Head & Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 83.

      Jackson NM, Mitchell JL, Walvekar RR. Inflammatory disorders of the salivary glands. In: Flint PW, Haughey BH, Lund LJ, et al, eds. Cummings Otolaryngology: Head & Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 85.