In this chapter we cover the dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections.criteriameasure of how well one variable or set of variables predicts an outcome of solar lentiginesThis glossary term has not yet been described., seborrheic keratosesThis glossary term has not yet been described. and lichen planus like keratoses (LKPL)