Several lymph nodes run along the back of the neck on both sides of the spine. There are also lymph nodes behind each ear. A soft lump about the size of a marble that moves slightly when touched may be a swollen lymph node.
Sometimes the lymph nodes become swollen when there is an infection nearby. Swollen neck lymph nodes can be a sign of an ear infection or an infected cyst. Lymph nodes can swell for no apparent reason. As the swelling subsides, there is no reason to worry.
Although it’s rare, swollen lymph nodes can sometimes be a sign of a more serious health condition, such as cancer. If the swelling does not go away after a few weeks, people should see a doctor.
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