By age 60, almost everyone has a few seborrheic keratoses.
Young papules are relatively flat and light brown.
More-advanced papules are dark brown or black. Papules measure 5mm to 20mm in diameter. They are distributed on the chest, back, face and arms. Papules don't itch or hurt. There may be only 1 or 2 papules, or there may be up to 100.