What is a small lump behind the right ear and pressure in same area?

There are several potential causes for a small lump behind the right ear and pressure in the same area. Here are a few possibilities:

* Swollen lymph nodes: Lymph nodes are small, bean-shaped glands that help fight infection. They can become swollen and tender when you have an infection, such as a cold or flu. Swollen lymph nodes behind the ear can sometimes be felt as a small lump.

* Sebaceous cyst: A sebaceous cyst is a noncancerous skin growth that develops from a blocked oil gland. Sebaceous cysts are usually small, round, and painless. They can occur anywhere on the body, including behind the ear.

* Lipoma: A lipoma is a noncancerous growth of fat cells. Lipomas are usually soft, movable, and painless. They can occur anywhere on the body, including behind the ear.

* Hematoma: A hematoma is a collection of blood that has leaked out of a blood vessel. Hematomas can occur after an injury, such as a blow to the head. They can be painful and tender, and they may appear as a lump behind the ear.

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

If you are concerned about a small lump behind your right ear and pressure in the same area, it is important to see a doctor for diagnosis and treatment. The doctor may perform a physical examination, order imaging tests, or take a biopsy of the lump to determine the cause and recommend the best course of treatment.