Skin Keratoses and Skin Growths

Seborrheic keratoses are noncancerous skin growths that can appear as waxy, greasy, tan, brown, or black growths on the skin. They often look like they have been stuck onto the skin and can become rough and crusty over time. These growths are more common as people get older and are not contagious. While they are harmless, some people may choose to remove them for aesthetic reasons. It's important to distinguish them from actinic keratoses, which are precancerous growths caused by UV exposure and can develop into skin cancer if not treated early.