Question: What does swelling of the jaw indicate?
Explanation: Jaw swelling most commonly reflects a spreading dental infection, but other causes exist including salivary gland obstruction, cysts, trauma, and tumours. The location, speed of onset, and associated symptoms guide diagnosis. Rapid-onset swelling with pain, fever, and a bad tooth strongly suggests dental infection. Swelling under the jaw that worsens at mealtimes suggests a salivary stone. Painless, slow-growing swelling requires investigation for a cyst or neoplasm. Any jaw swelling with difficulty swallowing, breathing, or opening the mouth is an emergency.
Related Questions:
How do I know if jaw swelling is an emergency?
Difficulty breathing, difficulty swallowing, a muffled or altered voice, drooling, inability to open the mouth beyond two fingers, swelling under the chin crossing the midline, or fever above 38 degrees. Any of these means calling emergency services or attending an emergency department.
Can jaw swelling be caused by something other than a tooth?
Yes. Blocked salivary glands, mumps, cysts, benign tumours, and rarely malignancy all cause jaw swelling. A swelling that appears at mealtimes and subsides afterwards suggests a salivary duct stone. Painless, persistent, slowly enlarging swelling always warrants investigation.
Why does the swelling sometimes go down but the problem remain?
Because the abscess has found a drainage route, relieving pressure. The infection continues destroying bone silently. Reduction in swelling without treatment of the source is not recovery. It is the infection becoming chronic rather than resolving.
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