13+ Preauricular Lymph Node Swelling Pics. They drain lymph fluid from the eyes, cheeks, and the scalp near your temples. These tiny nodes play a vital role in the immune system.

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In a child, a node is considered enlarged if it is more than 1 centimeter (0.4 inch). I have a swollen preauricular lymph node about 1.1cm and it tends to swell every now and then and becomes really tender to touch. The patient presented with a right preauricular swelling, 1cm anterior.

In the preauricular area, things like an upper respiratory infection, conjunctivitis and ear infection can enlarge these nodes.

Synovial cyst of the temporomandibular joint: Treatment depends on the cause for swelling of the preauricular lymph nodes. Your glands could be swollen for a number of reasons. They function as filters, trapping viruses, bacteria and other causes of illnesses before they can infect other parts of your body.