Seborrheic keratosis is a common noncancerous skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black, or light tan. They tend to look waxy, scaly, and slightly raised. They commonly present on the head, neck, chest, or back.

Seborrheic keratoses are harmless and not contagious. They do not require treatment, but you may decide to have them removed if they become irritated by clothing or if you do not like their appearance.

Cryotherapy, surgical removal, or electrocautery can thin these spots out or make these spots disappear. An exfoliating moisturizer can also be used to make them feel less rough.