Keratosis Pilaris

Keratosis pilaris is a very common, harmless condition that produces small, rough bumps on the skin. The bumps are caused by a buildup of keratin, a protein that protects the skin, which plugs the opening of hair follicles.

The bumps most often appear on the backs of the upper arms, the thighs, the buttocks, and sometimes the cheeks. The skin can feel dry and rough, like sandpaper, and the bumps may be skin-colored, red, or brown. The condition is usually not itchy or painful.

Keratosis pilaris often improves with age and tends to be more noticeable in dry winter months. It is not contagious and is not a sign of a serious health problem.

While there is no cure, moisturizing regularly and using gentle exfoliating creams that contain ingredients such as urea, lactic acid, or salicylic acid can smooth the skin. A dermatologist can suggest a routine if the bumps are bothersome or the appearance is a concern.