Small rough bumps on the backs of the arms, thighs or cheeks are usually keratosis pilaris. A licensed clinician reviews photos and discusses moisturizer choices and prescription options when appropriate. Insurance or $50 self-pay.
Painful, pus-filled or rapidly spreading bumps need in-person assessment.
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Keratosis pilaris causes small rough bumps, sometimes red or brown, on the backs of the upper arms, thighs and cheeks, giving a goose-bump or sandpaper feel. Keratin plugs the hair follicles; it is harmless, runs in families and is common with dry skin and eczema. It cannot be cured but often improves with regular moisturizers containing urea, lactic or salicylic acid, and sometimes a topical retinoid. Gentle skin care matters more than scrubbing, which can worsen redness.