Keratosis pilaris is a condition where small bumps appear on the skin, especially on the areas like the upper arms, legs, thighs and the buttocks. The reason for the development of these bumps is over production of keratin, which is the fibrous scleroprotein found on the outer layer of the skin. Sometimes, keratosis pilaris can also affect the face, especially the cheek. This type of keratosis pilaris is known as keratosis pilaris rubra faceii, or in short, KPRF. This type of keratosis pilaris on face can often be mistaken for acne. It usually causes bumps to appear on patches, for which the entire cheek can look red and inflamed. Apart from KPRF, there are two other common types of keratosis pilaris, known as keratosis pilaris rubra and keratosis pilaris alba.