Seborrheic keratoses, skin tumors of undetermined etiology, are easily traumatized with consequent local irritation and inflammation, and are cosmetically undesirable. They can occasionally undergo malignant degeneration. A rapid increase in size and number of these lesions is thought by many to be a sign of internal malignancy. Dermabrasion using a diamond fraise is a simple and fast method for removing multiple seborrheic keratoses with minimal trauma, rapid healing, and good cosmetic results.