What is a Lump and red mark on the left side of neck?

There are many possible causes for a lump and red mark on the left side of the neck. Some of the most common include:

- Swollen lymph nodes: Lymph nodes are small glands that help to filter out bacteria and other foreign particles from the body. When they become infected or inflamed, they can swell up and become tender or painful. Swollen lymph nodes on the left side of the neck can be a sign of an infection in the head, neck, or chest, such as a cold, sore throat, or ear infection.

- Thyroid nodules: Thyroid nodules are growths on the thyroid gland, a small gland located in the front of the neck. Most thyroid nodules are benign (non-cancerous), but some can be cancerous. Thyroid nodules can cause a lump or swelling in the neck, as well as hoarseness, difficulty swallowing, and weight changes.

- Skin infections: Skin infections, such as cellulitis or abscesses, can cause a lump and red mark on the neck. These infections are often caused by bacteria that enter the skin through a cut or abrasion.

- Muscle strain or injury: A muscle strain or injury can also cause a lump and red mark on the neck. This can occur due to overuse of the muscles in the neck, such as from sports or heavy lifting.

- Tumors: In rare cases, a lump and red mark on the neck can be a sign of a tumor, such as a lymphoma or sarcoma. These tumors can be cancerous or non-cancerous, and they can occur in any part of the body, including the neck.

If you are concerned about a lump or red mark on the left side of your neck, it is important to see a doctor to get a diagnosis. The doctor will be able to determine the cause of the lump and recommend the appropriate treatment.