Figure legends:
Figure 1: erythematous plaques
Figure 2: erythematous, indurated plaques with occasional ruptured bulla
Figure 3: hyperkeratosis, thinning of epidermis, edema of papillary dermis with focal subepidermal bulla and homogenization of collagen fibers of the reticular dermis.
Figure 4: hyperkeratosis, mild thinning of epidermis, homogenization of collagen fibers