Keratosis pilaris

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Keratosis Pilaris

Keratosis pilaris (pronounced: keh-rah-TOH-sis pih-LAIR-is) is a common, harmless skin condition that causes dry, rough patches and tiny bumps, usually on the upper arms, thighs, cheeks, or buttocks. The bumps generally don't hurt or itch.

Etymology

The term "keratosis pilaris" comes from the Greek word "keras," which means "horn," and "pilus," which means "hair." This is because the condition causes small, hard bumps that can make the skin feel like sandpaper.

Symptoms

Keratosis pilaris often causes small, acne-like bumps, which are actually dead skin cells plugging hair follicles. These bumps usually appear on the upper arms, legs, or buttocks; they're typically white, but can sometimes be red. The skin around the bumps is often dry and rough.

Causes

Keratosis pilaris is caused by a buildup of keratin, a hard protein that protects skin from harmful substances and infection. The keratin forms a scaly plug that blocks the opening of the hair follicle. Usually many plugs form, causing patches of rough, bumpy skin.

Treatment

There's no cure for keratosis pilaris, but moisturizing lotions or creams may help soothe the skin and improve its appearance. These products may contain lactic acid, salicylic acid, urea, or retinoids, which can help to exfoliate dead skin cells and reduce the appearance of the bumps.

Related Terms

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