Seborrheic keratoses

[Raeanne Dimick]

Seborrheic keratoses (seborrheic warts) are usually warty and skin-colored, brown, or black growths that can appear anywhere on the skin.
(See also Overview of Skin Growths.)
The cause of seborrheic keratoses is unknown. Some people have an inherited tendency to develop seborrheic keratoses. These harmless growths are very common among middle-aged and older people. Some people have many growths. Although these growths can appear anywhere, they most often appear on the torso and the temples. In darker-skinned people, a large number of these growths can occur on the cheekbones (a condition called dermatosis papulosa nigra).
Seborrheic keratoses are round or oval and vary in size from less than