Small lesions can be treated with light electrocautery. Larger lesions can be treated with electro desiccation and curettage, shave excision, or cryosurgery. When correctly performed, removal of seborrheic keratoses will not cause much visible scarring except in persons with dark skin tones. Also, cryotherapy is a technique based on freezing the seborrheic keratosis growths with liquid nitrogen.
There is some evidence that skin exposed to the sun is more likely to develop a seborrheic keratosis.growths also appear on skin that is usually covered up when people go outdoors approximately 19% and 31% exposed areas were more often flat and more than 3 mm in diameter than those on the non-exposed areas.
Seborrheic keratoses can look like warts, moles, actinic keratoses, and skin cancer. They differ, though, from these other skin growths. Seborrheic keratoses have a waxy, “pasted-on-the-skin” look. Some look like a dab of warm, brown candle wax on the skin. Others may resemble a barnacle sticking to a ship.