What should you know about a black pimple-like bump?

A black pimple-like bump may be a blocked pore, an inflamed hair follicle, dried blood or a pigmented skin lesion. Its location, surface, tenderness, duration and pattern of change matter more than colour alone. Avoid squeezing, cutting or burning it at home. A clinician should examine a bump that is new and changing, does not settle, or repeatedly crusts or bleeds.

An open comedone has a dark surface because material in a pore is exposed to air; the colour is not trapped dirt. Folliculitis can present with tender or itchy bumps centred on hairs, sometimes after shaving, friction or sweating. An ingrown hair may curl into the skin and leave inflammation or darker colour after healing. A rough, firm or distinctly pigmented bump has a different set of possibilities and may need close visual examination.

Wash gently and pause shaving, scrubbing or tight clothing over an irritated area. A warm compress may soothe a tender follicle, but stop if heat worsens discomfort. Do not use a needle or attempt lesion removal, since this can cause infection, scarring and further pigment change. Note when the bump appeared and take a clear photograph beside a ruler if you need to track its shape or growth. Treatment should match the diagnosis rather than the colour.

Book a timely skin examination if the bump enlarges, changes shape or colour, has uneven borders, forms a sore that does not heal, or bleeds without being picked. Seek urgent care if redness spreads quickly, pain becomes severe, pus collects with fever, or swelling affects the eye or breathing. People with diabetes, reduced circulation or weakened immunity should seek earlier advice for a painful, draining or infected-looking bump.

Tell the clinician about growth, bleeding, pain, itching, shaving, recent bites and any product applied to the area. Ask whether the bump arises from a pore, hair follicle or pigmented skin tissue; whether magnified examination is useful; and whether sampling or removal is needed. If treatment is offered, ask what result to expect and how to reduce irritation or scarring.