Swollen gums and pain under jaw
Swollen gums with pain beneath the jaw can reflect gum disease, a tooth infection, or a nearby salivary or lymphatic problem.
The short answer
Swollen gums with pain beneath the jaw can come from gum disease, a tooth infection, an inflamed salivary gland, or tender lymph nodes, and the cause needs examination. A dental abscess becomes more concerning when swelling, fever, or difficulty opening the mouth develops.

What is the direct answer?
What does this question mean?
The area under the jaw contains lymph nodes, salivary glands, muscles, and tissues connected with the lower teeth. A lower molar infection may cause gum tenderness and pain that seems to travel into the jaw or neck.
What can you do next?
Keep brushing carefully, rinse with warm salt water if it is comfortable, and use a cool compress outside the face. Do not squeeze the gum or rely on leftover antibiotics, because drainage or dental treatment may be needed to remove the source.
When should you seek dental care?
Arrange prompt dental care for a new lump, worsening tooth pain, pus, fever, or swelling under the jaw. Seek emergency help for trouble breathing or swallowing, rapidly spreading swelling, or inability to open the mouth normally.
What should you ask the dentist?
Ask whether a lower tooth, periodontal pocket, salivary gland, or lymph node is responsible, and whether a periapical X-ray or other imaging is indicated. Ask whether the tooth needs drainage, root canal treatment, extraction, or gum therapy.
Frequently asked questions
Can swollen gums cause jaw pain?
Inflamed gum tissue can be tender, but pain under the jaw also warrants checking the tooth roots and nearby non-dental tissues.
Is a lump under the jaw always a tooth abscess?
No. It may be a lymph node or salivary structure, so its location, tenderness, duration, and dental findings must be assessed.
