Sialadenitis: When a Salivary Gland Actually Gets Infected

Sialadenitis is inflammation of a salivary gland caused by an infection, which can be either bacterial or viral, distinguishing it from the purely mechanical blockage seen in sialolithiasis, though a blocked duct from a stone is actually one of the more common setups that leads to a subsequent bacterial infection.

Reduced saliva flow, whether from a blocking stone, dehydration, certain medications, or other causes, creates an environment where bacteria can more easily multiply within the gland, leading to infection, while viral sialadenitis, like mumps, spreads through a different mechanism entirely.

Significant pain and swelling in the affected gland, redness of the overlying skin, fever, and sometimes pus draining from the duct opening into the mouth are characteristic symptoms of this more serious, infected presentation.

The parotid glands, located near the ears, and the submandibular glands, beneath the jaw, are the most commonly discussed locations for this condition.

Yes, mumps is a well-known example of viral sialadenitis, specifically affecting the parotid glands, causing the characteristic facial swelling associated with this viral infection, though it's a different underlying cause than the bacterial infections more commonly discussed in adult cases of sialadenitis.

People who are dehydrated, have reduced saliva flow from medications or an underlying condition, have a history of salivary stones, or are recovering from surgery, particularly if they've had limited oral intake during that recovery, face elevated risk.

Your provider evaluates the characteristic symptoms and examines the affected area, sometimes using imaging to check for an underlying blocking stone or to assess the extent of the infection, particularly if the diagnosis isn't entirely clear from the clinical picture alone.

Antibiotics are typically prescribed to address the underlying bacterial infection, along with supportive measures like hydration, warm compresses, and gentle massage of the affected gland, and identifying and addressing any underlying cause, like a blocking stone, is also an important part of comprehensive treatment.

Yes, in some cases, particularly if untreated, the infection can progress to form an abscess or, less commonly, spread further, making prompt evaluation and treatment for significant symptoms genuinely important rather than something to simply wait out.

This depends on the cause — bacterial sialadenitis generally isn't considered contagious in the way an airborne or easily transmitted infection would be, while viral causes like mumps are genuinely contagious, spreading through respiratory droplets and close contact.

Yes, particularly in people with ongoing risk factors like recurrent salivary stones or chronic reduced saliva flow, making addressing these underlying contributing factors relevant for reducing future episodes.