Definition

Seborrheic keratoses (SKs) are noncancerous growths on the skin that are very common, especially with age. They appear as waxy, scaly patches that can vary in color from light brown to black. SKs typically grow slowly and are usually harmless.

Cause

The exact cause of seborrheic keratoses is unknown, but it is thought to be related to sun exposure and aging. They are not contagious and do not develop from warts or moles. While anyone can develop SKs, they are more common in people with lighter skin tones and those over the age of 50.

Treatment

Seborrheic keratoses usually don’t require treatment. However, if they are itchy, irritated, or cosmetically bothersome, there are several options. A dermatologist can remove them by freezing with liquid nitrogen, scraping, or using an electric current.

Disclaimer: Please consult a dermatologist if you have concerns about a growth on your skin, such as a suspected seborrheic keratosis. They can perform a proper examination and recommend the best course of action.