Hard lump under the skin at the back of the neck

A hard lump under the skin at the back of your neck should be examined when it persists, enlarges, or changes. Its depth, mobility, tenderness, overlying skin, and relationship to recent illness matter more than the label you give it. Avoid trying to diagnose it by touch alone.

A lump in this area can be a blocked or inflamed skin structure, a benign soft-tissue growth, or an enlarged lymph node responding to irritation or infection around the scalp, ear, or throat. Less commonly, a persistent neck mass can be associated with Head and Neck Cancer, Lymphoma, Thyroid Cancer, or Cancer of Unknown Primary. These names describe distinct conditions, not a conclusion about your lump.

Book a medical appointment and write down the date it appeared, any recent cold, scalp irritation, dental problem, or vaccination, and whether the skin is warm or discoloured. Take a clear photograph beside a familiar object so you can notice change without constant touching. A clinician may inspect the skin and neck and decide whether imaging or a needle sample is useful.

Get urgent help if swelling affects breathing or swallowing, spreads quickly, or is accompanied by severe illness. Arrange prompt review if the lump is hard and fixed, steadily enlarging, associated with persistent fever or night sweats, or accompanied by unexplained weight loss, voice change, or ongoing swallowing discomfort.

Ask whether the lump seems to arise from skin, muscle, or a lymph node; what changes should trigger a return visit; and whether an examination of the scalp, ears, mouth, and throat is needed. Ask what a scan or needle test could clarify before deciding on treatment such as Thyroid Removal Surgery.