What should you know about itchy bump after shaving?

Shaving can leave a sharp hair edge that curves back into the skin, producing an itchy or tender bump called an ingrown hair. Irritation or bacteria around a follicle can cause folliculitis, sometimes with several small pustules. Razor bumps are more likely where tightly curled hair is shaved closely, while keratosis pilaris causes many rough follicle-based bumps that may predate shaving. The exact cause depends on the location, number of bumps, timing and whether there is pus or spreading redness.

Pause shaving over the area until the skin settles. Wash gently, use a cool compress for irritation, and wear loose clothing where rubbing is a problem. Do not squeeze the bump or use a needle to release a trapped hair. When shaving again, soften the hair with warm water, use a clean sharp razor and shave in the direction of growth with light strokes. If bumps keep returning, a clinician can discuss topical treatment or whether laser hair removal is suitable for the area and your skin type.

Arrange an examination if bumps are painful, pus-filled, recurrent, leaving dark marks or scars, or not settling after you stop shaving. Seek prompt help for spreading redness, increasing warmth, fever or a rapidly enlarging lump. Get advice before self-treating if the bump is near the eye or genitals, or if you have diabetes or reduced immunity. A clinician can distinguish an ingrown hair from folliculitis or another skin condition.

Ask whether the bump is an ingrown hair, razor bumps or folliculitis, and which shaving changes fit your skin. If episodes recur, ask about prevention and whether a longer-term hair-reduction option is appropriate.