Clothing rubbing against can get them irritated and make them grow. Alpha-hydroxy lotions and mild topical steroid creams may help this. If they get very itchy, irritated and bleed easily they should be removed. When a seborrheic keratosis turns black it may be difficult to distinguish from a skin cancer without a biopsy.
The consistent feature of seborrheic keratoses is their waxy, pasted-on or stuck-on look. The look is often compared to brown candle wax that was dropped onto the skin. They may be unsightly, especially if they begin to appear on the face. estimated to be between 11% and 26% Seborrheic keratoseson exposed areas were more often flat and more than 3 mm in diameter than those on the non-exposed areas.
The top layers of the epidermis are involved, seborrheic keratoses are often described as having a pasted on appearance. Some dermatologists refer to seborrheic keratoses as seborrheic warts these lesions, however, are usually not associated with HPV,and therefore such nomenclature is discouraged.