Describe the characteristic primary skin lesions of Lichen planus.
| | Fig. 12.1 Lichen planus. A, Typical violaceous, flat-topped, polygonal papules. The location on the volar wrist is characteristic. B, Note the Wickham’s striae. (Courtesy of James E. Fitzpatrick, MD.) | LP is a disease characterized by “P-words”:
• Plentiful
• Pruritic
• Polished
• Purple
• Polygonal
• Planar
• Papules
Primary lesions of the skin are 1 to 5 mm, flat-topped, violaceous, shiny papules (Fig. 12-1). While papules are often clustered, individual lesions tend to be discrete, with angulated (polygonal) borders. Wickham’s stria, a lacy white network present on the surface of the papules, is often of great diagnostic value.
|
