Neck Edema

Neck swelling

Some neck swelling may be present after an injury to the neck, but the swelling will go away once healing begins.

Common causes of neck swelling include:

Enlarged lymph nodes from an infection, such as a sore throat or from a cancerous tumor.

An enlarged thyroid gland from thyroid hormone changes.

Deep neck abscesses from a throat or mouth infection.

Cysts near the jaw, such as a thyroglossal duct cyst, or below the earlobe, such as a brachial cleft cyst.

Swollen salivary glands.

Mumps. Swelling of the parotid gland may cause facial and neck swelling.

WebMD