What should you know about fat lumps under the skin?

Some soft, mobile lumps are made of fatty tissue, while painful warm lumps may relate to inflammation or a boil. A firm or persistent bump can have other causes, including a cyst or a skin growth. Basal Cell Carcinoma usually appears on sun-exposed skin as a changing spot or sore, but any new or changing lesion deserves a proper look rather than self-diagnosis.

Location, duration, size change, tenderness, mobility, and changes in the overlying skin help a clinician decide whether observation, imaging, sampling, or treatment is appropriate.

Do not squeeze, cut, or repeatedly press the lump. Record when you noticed it and whether it changes, hurts, or becomes attached to deeper tissue. Arrange a clinical assessment for a new, persistent, enlarging, firm, fixed, or unexplained lump. A clinician may discuss observation, removal, or a targeted treatment such as Steroid Injection Into The Skin only when the diagnosis supports it.

Seek prompt medical care if the lump grows quickly, becomes very painful, red, hot, or drains, or if you develop fever or feel unwell. Urgent assessment is also appropriate for a lump with significant bleeding, a spreading skin change, or new weakness or numbness nearby.

Ask what features make the lump seem fatty or inflamed, whether it needs imaging or sampling, what changes to monitor, and whether it should be removed. Ask which symptoms should bring you back sooner.