What does a bump behind each ear mean?

There are a few different possibilities for what a bump behind each ear could be. Some of the most common causes include:

* Swollen lymph nodes: Lymph nodes are small, bean-shaped glands that help to filter out bacteria and other harmful substances from the body. When they become swollen, it can be a sign of an infection or other medical condition.

* Mastoiditis: Mastoiditis is an infection of the mastoid bone, which is located behind the ear. It can cause pain, swelling, and discharge from the ear.

* Sebaceous cyst: A sebaceous cyst is a noncancerous growth that develops from a clogged oil gland. It can appear as a small, round bump under the skin.

* Lipoma: A lipoma is a noncancerous growth of fat cells. It can appear as a soft, movable lump under the skin.

* Hemangioma: A hemangioma is a noncancerous growth of blood vessels. It can appear as a red or purple bump under the skin.

If you are concerned about a bump behind your ear, it is important to see a doctor to get a diagnosis. The doctor will be able to determine the cause of the bump and recommend the best course of treatment.