Keratosis pilaris is a common skin condition in which a protein in the skin called keratin forms hard plugs within hair follicles.

Keratosis pilaris is harmless (benign), does not get worse over time, and often disappears with age. It is more common in patients who have very dry skin, or who have atopic dermatitis (eczema). It seems to run in families.

In mild cases, small bumps, similar in appearance to "goose bumps," are found on the backs of the upper arms. The texture is that of very coarse sandpaper.

Bumps may also appear on the buttocks and thighs. Less commonly, bumps appear on the face and may be mistaken for acne.

Individual bumps are small, skin-colored papules that form within hair openings (follicles). The condition is generally worse in winter and often clears in the summer.

Images

Keratosis pilaris on the cheek

Keratosis pilaris rubra faceii

Keratosis pilaris rubra faceii

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Keratosis pilaris Symptoms

Review Date: 12/11/2009
Reviewed By: Michael Lehrer, MD, Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network; Linda Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)