Pityriasis Lichenoides Et Varioliformis Acuta

A Widespread Hemorrhagic and Crusted Eruption of Recent Onset

“…The distribution is characterized as diffuse, central, or peripheral, with the dif¬ fuse type having the shortest course and the peripheral type the longest.5 Lesions usually spare the palms, soles, and mu¬ cous membranes, and itching and constitutional symptoms are usually absent. 4 The histopathologic appearance is characterized by an interface dermatitis, with a lymphocytic infiltrate in the superficial dermis that invades the epidermis and obscures the dermoepidermal junction. Other features include a superficial and deep perivascular infiltrate with vacuolar alteration of the basal layer and may include lymphocytic vasculitis, extravasated erythrocytes, and atypical cells within the infiltrate.1"…”