Seborrheic keratoses (SKs) are common, benign lesions that grow on the outer layer of the skin. SKs present as tan, pink, or brown warty growths that are clearly distinguishable from normal skin. Individual lesions can be rough, scaly, or waxy in texture.
SKs generally develop after the age of 30. It is common to have several lesions rather than just one or two. SKs can present on any part of the body, but typically exclude the palms and soles of the feet. Unlike warts, these lesions are not due to a virus and are not contagious. Instead, SKs are hereditary and harmless.
SKs are usually asymptomatic growths that don’t require treatment unless they are bothersome or cosmetically disfiguring. Occasionally, these lesions can itch or become irritated by clothing or jewelry. If bothersome, common treatment options include cryotherapy, in which the lesions are frozen with liquid nitrogen, or a shave excision, in which the lesions are shaved off with a thin flat razor. Another treatment option is electrodessication; this procedure involves the burning the SKs with an electric tip to remove the associated cells and prevent regrowth of the lesion. Although SKs are benign, it is important to consult with your dermatologist if the lesions are changing or growing.
Any skin lesion that is changing, growing, or becoming symptomatic should be evaluated by a physician. Please contact our office if you have any new or concerning lesions. Our dermatologists can help educate and guide you in the right direction.