Prurigo pigmentosa is a chronic pruritic inflammatouy dermatosis characterized by erythematous papules in a reticulated pattern that resolve leaving a reticulated, mottled hyperpigmentation. Most cases hav been reported from Japan. Two cases of
prurigo
pigmentosa have been reported in Korean women.
We experienced a case of prurigo pigmentosa in a Korean man of 20 years of age. Histopathological findings of reddish papule showed exocytosis, sponsiosis, intraepidermal vesicles, hydropic degeneration of basal cells in the epidermis, and
lymphohistiocytic infiltration in the upper dermis. Direct immunofluorescence was negetive.
Therapy with dapsone, 50mg givcn daily, resulted in a remarkable regression of the reddish papules. The daily dose of dapsone was reduced to 25mg; however, no new reddish, pruritic papules have appeared. (Kor J Dermatol 1995;33(20 : 390~395)
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