Lump on the neck near the jaw: what to know

The area beneath and behind the jaw contains lymph nodes and salivary glands, as well as skin and muscle. Dental infection, a throat infection, ear trouble, or salivary-gland irritation can cause swelling or tenderness there. A lump that becomes more noticeable around meals may involve salivary tissue and deserves assessment. Head and neck cancer and lymphoma can present with a neck lump. Thyroid cancer is usually assessed lower in the neck, while cancer of unknown primary may be considered if a neck mass is found without an obvious starting site.

Check for tooth pain, mouth sores, dry mouth, fever, redness, pain with chewing, voice change, or difficulty swallowing. These details help a clinician decide which areas to examine.

Arrange a medical or dental assessment for a lump that remains after an infection settles, returns, grows, or has no clear explanation. The examination may include the teeth, mouth, throat, ears, jaw movement, salivary glands, and neck nodes. Imaging or a needle sample may be considered based on the findings. Do not squeeze the swelling or start leftover antibiotics without advice.

Seek urgent help for difficulty breathing, inability to swallow saliva, rapidly spreading facial or neck swelling, or severe pain with fever. Prompt review is also appropriate for a hard or fixed lump, progressive growth, persistent mouth ulcer, unexplained bleeding, hoarseness, drenching night sweats, or unexplained weight change.

Ask whether the lump matches a lymph node or salivary gland, whether a dental or throat source is visible, whether imaging is needed, and how to respond if it changes with meals or jaw movement.