What Could Be the Cause of a Hard Lump at the Junction of My Ear and Cheek?

Hard bumps at the junction of the ear and cheek may be caused by sebaceous cyst, subcutaneous lipoma, enlarged lymph nodes, folliculitis, and other reasons. Here are some details:

1. Sebaceous Cyst

This is the most common condition, especially in young people who are growing and developing. It is mainly caused by the blockage of the sebaceous glands' excretory ducts, resulting in the formation of retention cysts as the contents gradually increase and expand the cystic epithelium of the sebaceous glands. The characteristic change of this lesion is a spherical mass protruding from the skin, which is difficult to move, smooth in surface, and without a fluctuating sensation. It can squeeze out material resembling bean curd residue. It is most commonly found on the head, face, neck, chest, and back. Generally, there are no subjective symptoms, but if secondary infection occurs, symptoms such as pain and suppuration may appear.

2. Subcutaneous Lipoma

The symptoms of lipoma are similar to those of sebaceous cyst, but the skin of lipoma is slightly different. When pushing the skin locally along both sides of the mass with fingers, it can be found that the skin changes like an orange peel, which is called orange peel sign.

3. Enlarged Lymph Nodes

Small movable bumps can often be seen behind the ears of children, which are relatively tough and have a diameter not exceeding 3mm to 10mm. This is due to the vigorous development of the lymphatic system during infancy and is normal. In adults, hard bumps behind the ears may indicate lymphadenitis, and the lump may exhibit the characteristics of acute inflammation such as redness, swelling, heat, and pain. The onset is often rapid. The lymph nodes are soft, tender, smooth in surface, not adherent to the underlying tissues, and movable. Generally, they will stop enlarging to a certain extent. After the inflammation resolves, the lump will naturally resolve as well.

4. Folliculitis

When the hair follicles are infected with bacteria, it can cause suppurative inflammation. Initially, small red papules may appear, which gradually enlarge and turn into pustules. They are usually solitary and scattered, and may cause mild pain. The hair may pass through the center, surrounded by erythema. After falling off, the lesion will dry and form a scab.