Transitory Pigmented Purpuric Eruption of the Lower Extremities

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Abstract
Introduction Four well-known clinical syndromes comprise the group of purpuric pigmented eruptions.1These consist of pigmented macular lesions involving predominantly the lower extremities. Additional variable characteristics include purpura, pruritus, atrophy, ulceration, and telangiectasia. We desire to describe a fifth entity which probably belongs to this group. It has been encountered by us more often than the combined total of the other four members. This entity does not appear to be clearly depicted in modern American dermatologic texts. Each of these five entities has distinguishing clinical characteristics, yet all have similar histopathologic features. However, we should like to emphasize that the clinical criteria for the clear-cut diagnosis of each member of this group are confusing, since many morphological features are shared. Pigmented Purpuric Eruptions Reports of the variable clinical features of (1) angioma serpiginosum (Hutchinson), (2) purpura annularis telangiectodes (Majocchi), (3) progressive pigmentary dermatitis (Schamberg), and (4) pigmented purpuric

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