Anomalies of the Skin Surface

Abstract

All lesions described so far may also include an alteration of the surface of the skin and thus produce intricate lesions (e.g., a papule may become necrotic = necrotic papule). Some lesions known as “primary,” with an initially normal surface, will evolve towards an alteration of the skin surface. This observation explains the historical designation of “secondary lesions” for skin surface alterations. However, it is an inaccurate term since these lesions can be initially present in numerous conditions and are not necessarily an evolution of a “primary lesion.” For teaching purposes, these lesions have already been defined and briefly covered in Chap. 2. A more comprehensive description is presented here, although readers may also refer to the illustrations in Chap. 2.