A lump under the ear lobe that is located behind the jaw bone can be a cause for concern. It is important to understand the potential causes and seek medical attention to determine the underlying issue.

One possible cause of a lump under the ear lobe behind the jaw bone is a swollen lymph node. Lymph nodes are part of the body’s immune system and can become enlarged in response to infection or inflammation. In this case, the lump may be accompanied by other symptoms, such as fever, sore throat, or fatigue.

Another possible cause is a cyst. A cyst is a sac-like structure that can develop anywhere in the body, including behind the jaw bone. These cysts can vary in size and may or may not be painful. If a cyst becomes infected or grows larger, it may need to be drained or removed by a healthcare professional.

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