Figures legend:
Fig. 1a,b,c: erythematous papules of the trunk
Fig. 2: Skin biopsy specimen (hematoxylin-eosin stain; original
magnification: ×40): in the upper epidermis, large keratinocytes with
enlarged nuclei, a bubbly bluish cytoplasm and variably-sized
keratohyaline granules