A teenager with sandpaper-like bumps on the outer arms.

KERATOSIS PILARIS

Keratosis pilaris (KP) is a very common condition in which the hair follicles become clogged and variably inflamed.

• Some reports have shown an association with being overweight, leg skin dryness, and allergies/atopic dermatitis.
  • Rough “sandpaper” most commonly on the outside of the upper arms is typical but KP may affect the cheeks, thighs, and/or back as well.
• Very common in young people.
• Entirely benign.

Keratosis Pilaris. The upper, outer arms is the most common location of keratosis pilaris. The skin is typically rough like “sandpaper”. The cheeks, thighs, and back may be affected as well. There may be significant perifollicular redness, as shown here.

Keratosis Pilaris. The cheeks of a child or teenager is a common location. OTC Differin may be beneficial for KP of the cheeks.

Keratosis Pilaris, here on the thighs.

RegionalDerm

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