Infected ingrown hair: what to know

An ingrown hair curls back into the skin or becomes trapped beneath its surface after hair removal. The area may itch, sting, swell, or form a red bump. Scratching, picking, and repeated shaving can damage the follicle and allow inflammation or infection to develop. Several bumps may instead reflect folliculitis or razor bumps, so the pattern and hair-removal history are useful clues.

Darker marks can remain after the bump settles. A clinician can check for a deeper collection of pus and discuss prevention if episodes recur.

Pause shaving, waxing, and plucking over the area while it is inflamed. Wash gently, use a clean warm compress for comfort, and avoid tight clothing or friction. Do not squeeze the bump or dig for the hair with a needle. If a hair tip is already clearly visible at the surface, let a clinician advise whether it can be released safely.

After healing, prevention may involve changing shaving direction, using a clean sharp razor, avoiding repeated passes, or considering laser hair removal for suitable people. Treatment choice depends on skin type, hair pattern, and the area involved.

Arrange assessment if pus, increasing warmth, worsening pain, or redness develops, or if the bump does not settle after stopping hair removal. Seek urgent care for fever, rapidly spreading redness, severe swelling, red streaking, or feeling very unwell. Repeated lesions, scarring, or dark marks warrant a prevention plan rather than repeated picking.

Ask whether the lesion is an infected ingrown hair, folliculitis, or razor bumps; whether prescription treatment is needed; how to remove hair during healing; and whether a longer-term hair-removal plan could reduce recurrences.