Lump on the Back of the Head or Neck: What to Know

A lump on the back of the head or neck can have several causes, and an examination is needed to identify it. It may be a skin cyst, an inflamed hair follicle, a muscle-related swelling, or a lymph node reacting to an infection. Less commonly, a persistent mass can be linked with a tumour, including a head and neck cancer, lymphoma, thyroid cancer, or a cancer whose original site is not yet known. The position, texture, size, movement, skin changes, and symptoms around the lump help guide assessment.

Lymph nodes can enlarge near an infection in the scalp, ear, throat, or nearby skin. They may feel tender and settle as the illness improves. A cyst or blocked skin gland may feel smooth and sit just beneath the skin; squeezing it can worsen inflammation. A firm, fixed, enlarging, or unexplained mass needs a clinician's assessment because its appearance alone cannot identify the cause. A lump does not by itself show that cancer is present.

Assessment may include questions about when the lump appeared, recent infections, dental problems, swallowing or voice changes, night sweats, unexplained weight change, and tobacco or alcohol exposure. The clinician may examine the scalp, mouth, throat, thyroid area, and lymph-node regions. Depending on the findings, imaging or a needle sample may be suggested.

Arrange a medical appointment if the lump persists, grows, returns, or has no clear explanation. Note when you first noticed it, whether it changes, and whether it is painful or moves under the skin. Do not puncture, squeeze, or repeatedly press it. If a recent cold, sore throat, scalp irritation, or dental issue is present, mention that history and any treatment already used. Take a photograph or gently record its approximate position so changes are easier to describe.

Seek prompt medical care for a lump that is rapidly enlarging, very painful, red and hot, draining, or associated with fever. Get urgent help if swelling causes trouble breathing or swallowing, or if you develop sudden weakness, confusion, or a severe headache. Arrange timely review for a hard or fixed lump, a mass that remains after an infection has cleared, or a lump accompanied by persistent hoarseness, coughing, mouth sores, unexplained weight change, drenching night sweats, or unusual tiredness.

Ask what structures lie beneath the lump and what features were found on examination. You can also ask whether an ultrasound or another scan is appropriate, whether a needle sample is needed, what changes should trigger an earlier review, and when you should expect the next step. If the lump is near the thyroid, ask how the thyroid will be assessed and whether thyroid surgery could ever be relevant.