Keratosis pilaris (KP) is a skin condition characterized by small, rough bumps on the skin, most commonly on the upper arms, thighs, cheeks or buttocks. KP is caused by a buildup of hair protein (keratin) within pores. Keratosis pilaris may also be itchy, dry and discolored. Keratosis pilaris can affect those of any age, but commonly worsens during puberty and improves over time. The cause is largely genetic, and KP may be associated with atopic dermatitis. There is no cure, but ensuring gentle exfoliation and moisturization is key to improving the skin's appearance.
