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Published on: 7/9/2025

What might cause swelling on one side of my neck?

Swelling on one side of the neck can be caused by enlarged lymph nodes, which may be due to infections or other conditions.

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Explanation

Swelling on one side of the neck often happens because of enlarged lymph nodes. Lymph nodes can get bigger when your body is fighting an infection. According to one study, these nodes might look bigger but are usually not a serious problem.

Sometimes, the swelling is near the jaw, called the submandibular area. This can be due to different reasons, such as infections or blockages. Another study mentions that dental issues can also lead to swelling in the neck.

Possible Causes of Neck Swelling:

  • Infections: Your body might be fighting germs, making the lymph nodes bigger.
  • Dental Problems: Issues with teeth or gums can cause swelling.

If you notice swelling, it is important to talk to a healthcare professional to find out the exact cause.

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