Red Bumps on Lower Arms: What to Know

Tiny, rough, evenly spaced bumps around hair follicles may fit keratosis pilaris, sometimes called chicken skin. It often feels rough more than painful. Folliculitis can instead produce tender, itchy, or pus-filled bumps around individual hairs, especially after sweating, friction, or hair removal. A new detergent, lotion, fabric, or plant exposure can cause an itchy contact reaction. The lower-arm location alone cannot confirm one diagnosis, and the same person can have more than one cause.

Use a mild cleanser and lukewarm water, then moisturise while the skin is slightly damp. Choose loose, breathable sleeves and reduce rubbing from straps or rough fabrics. Avoid picking, scratching, harsh scrubs, and heavily fragranced products. If the bumps are rough but not inflamed, consistent moisturising may improve texture gradually; stop any product that burns or worsens redness. Photographing the area during changes can help a clinician assess the pattern.

Seek prompt care for rapidly spreading redness, warmth, marked pain, pus, fever, red streaks, facial swelling, or breathing difficulty. Make a routine appointment if the bumps persist, itch severely, bleed from scratching, leave marks, or repeatedly flare. A clinician can distinguish keratosis pilaris from folliculitis, dermatitis, or another rash and tailor treatment to the skin findings.

Do these bumps look more like keratosis pilaris, folliculitis, or contact irritation? Which moisturising ingredients should I try? What should I avoid if the skin becomes itchy or sore?