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    Skin Problems & Treatments Health Center

    Keratosis Pilaris Directory

    Keratosis pilaris appears as small bumps, usually on the upper arms and thighs. The harmless condition is caused by a buildup of the protein keratin that can plug hair follicles. It may worsen during pregnancy, after childbirth, or during the dry winter months. Follow the links below to find WebMD's comprehensive coverage about keratosis pilaris, what it looks like, how it is treated, and much more.

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    Thumbnail: Why the Skin on Your Arms Is Bumpy

    Got lots of little bumps on your arms? As it turns out, they're caused by a very harmless -- and very common -- skin condition. Here's what you can do about them.

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