Keratosis pilaris is a harmless skin condition which causes dry, rough patches and tiny bumps, often on the upper arms, thighs, cheeks or buttocks.
The bumps with keratosis pilaris usually don't hurt or itch. Keratosis pilaris is often considered a common variant of skin.
Keratosis pilaris can appear as round or oval-shaped waxy or rough bump, typically on the face, chest, a shoulder or the back.
A flat growth or a slightly raised bump with a scaly surface, with a characteristic "pasted on" look.
Varied size, from very small to more than 1 inch (2.5 centimeters) across.
Some actinic keratoses can turn into squamous cell skin cancer.
Because of this, the lesions are often called precancer.
They are not life-threatening.
But if they are found and treated early, they do not have the chance to develop into skin cancer.