What should you know about cluster of lumps under skin?

Lumps that are painful, warm, and red may reflect an infected collection such as [Boils](/conditions/boils/). Firm, slowly changing lumps may be cysts or other benign growths. A sore that does not heal, bleeds, or develops a persistent crust needs examination because some skin cancers, including [Basal Cell Carcinoma](/conditions/basal-cell-carcinoma/), can resemble an irritated spot. Several nearby lumps may also be unrelated lesions occurring together. The symptom itself does not identify one diagnosis.

Do not squeeze, pierce, or repeatedly massage the area. Wash gently, keep note of its location, and take a dated photograph so changes are easier to describe. Record whether the lumps move under the skin, whether they feel soft or hard, and whether discharge or fever occurs. Book a clinician visit for a new cluster, especially if it persists or enlarges. A clinician may inspect the skin and nearby lymph-node regions and may recommend further assessment. Explore [Skin Lumps](/symptoms/skin-lumps/) for terminology. In selected inflamed lesions, a [Steroid Injection Into The Skin](/treatments/injectables/intralesional-steroid-injection/) may be discussed, but it is not suitable for every lump.

Seek same-day medical advice for rapidly spreading redness, severe pain, fever, red streaking, or drainage with feeling unwell. Arrange prompt assessment when a lump is fixed, repeatedly bleeding, ulcerated, changing quickly, or accompanied by unexplained weight loss or night sweats. Emergency care is appropriate for facial swelling with breathing or swallowing difficulty.

Do these lumps appear to be in the skin, hair follicles, or deeper tissue? Are they inflamed or infected? What changes should make me return sooner? Would a swab, scan, or small sample help clarify the cause?