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Seborrheic keratoses are raised growths on the skin. Seborrheic means greasy and keratosis means thickening of the skin. There may be just one or clusters of dozens. They are usually started off light tan, and then may darken to dark brown or nearly black.
These are not contagious and do not spread. They have no relationship to skin cancer and do not pose a risk to health. They get darker after sunless tanning creams have been used. Unlike moles Nevi, they never turn into melanoma stastistics estimated to be between 29% and36% Seborrheic keratoseson exposed areas were more often flat and more than 3 mm in diameter than those on the non-exposed areas.
Healing is slower and scarring is more common. Sometimes seborrheic keratoses are burnt off with an electric needle or laser, especially if they are small.Another treatment often done is scraping off with a curette. This is more useful when only a few need to be done, and one really wants them not to come back.