The “sandpaper skin” frequently occurs on the upper arms, thighs and buttocks. It may also develop over the face. Keratosis is a benign, common dermatological conditions. They appear as multiple, small rough papules (sandpaper-like appearance). Keratosis pilaris is caused by the accumulation of keratin that protects our skin from infections. The buildup of keratin forms a plug that blocks the opening of the hair follicle. If you have dry skin, you are more likely to have keratosis pilaris.
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