Figure 1: (a) Black eschar with erythema; (b-c) epidermal spongiosis with involved vessels in the dermis; (d) collections of bacteria within vascular walls.
Figure 2: (a)Erythematous plaques with dusky centers; (b-c) epidermal spongiosis and extravasation of red blood cells in the superficial dermis; (d) dermal vessel thrombosis.
Figure 3: (a)Multiple purpuric papulovesicles evolving into hemorrhagic bullae; (b-c) epidermal spongiosis and vesicular change with dermal lymphocytic infiltrate; (d) vasculopathy.