Which areas are most commonly affected by keratosis pilaris (KP)?

Updated: Aug 12, 2019
  • Author: Ally N Alai, MD, FAAD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Commonly involved areas include posterolateral upper arms (see the image below), anterior thighs, buttocks, and facial cheeks. The single most characteristic area in keratosis pilaris is the upper-outer arms.

Keratosis pilaris in characteristic location on ou Keratosis pilaris in characteristic location on outer upper arm of a 30-year-old woman.

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