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Although Mucha-Habermann disease (pityriasis lichenoides et varioliformis acuta) poses the greatest difficulty in differentiation clinically, and sometimes histopathologically, from lymphomatoid papulosis, a reaction to an insect “bite” may present a challenge an equally great in differentiation histopathologically from lymphomatoid papulosis. The reason, as always is the case in authentic differential diagnosis, pertains to many findings […]