Prurigo pigmentosa in Korea: clinicopathological study

Abstract

We suspect that PP is not uncommon in Korea, and the disease may be underestimated. Strict restriction of diet as well as known associated factors like wet condition are suggested as one of the important factors contributing to the occurrence of PP in Korea.

Prurigo Pigmentosa

“…4 Other less commonly reported involved regions include the antecubital fossa, limbs, forehead, face, 2,4,14,16 axilla, 13 earlobes, 16 pubic region, 18 and buttocks. 2,4,17 The asymmetric involvement of the chest and neck in patient 2 and the pustular lesions in patient 3 are rare features of PP. 3 In our series, lesions at different clinical stages coexisted in all patients, and the morphology and distribution of lesions were analogous to those of previous reports.…”

“…This finding is also evident in fixed-drug eruptions and could explain the persistent recurrences of the lesions at the same site. 2,7 In contrast to PP, the lesions in CARP are keratotic and show papillomatosis on histology. Combining both clinical and histopathologic features is necessary to differentiate PP from other inflammatory dermatoses.…”

“…[2][3][4] Recent reports have described PP in patients from Switzerland, the United Kingdom, the United States, Morocco, Spain, Italy, Germany, Korea, Turkey, China, 3 Iran, India, Indonesia, 4 and Taiwan 6,7 with most of the reports being from Turkey. It is yet unclear whether PP has an ethnic predisposition to the Japanese or whether it is underdiagnosed in other countries.…”

“…[2][3][4] Recent reports have described PP in patients from Switzerland, the United Kingdom, the United States, Morocco, Spain, Italy, Germany, Korea, Turkey, China, 3 Iran, India, Indonesia, 4 and Taiwan 6,7 with most of the reports being from Turkey. 1,2,[11][12][13][14] In this study, the patients who were all females had a similar age distribution as described previously in the literature. 9 It is rarely described in prepubescent children and elderly individuals 10 although age at onset has been documented to range from 7 to 61 years.…”

Prurigo pigmentosa: a clinical and histopathological study of nine Chinese cases

“…3 The prevalence of PP differs by race and ethnicity; the majority of casesmore than 300 -have been reported in Japan. 4 However, PP is not limited to Asian populations; it has been reported to affect Europeans, including Italians and Turks. 1,2,[5][6][7] Topically or systemically administering antihistamines or corticosteroids does not aid in the treatment of PP.…”