KMID : 0363220200580060423
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Korean Journal of Dermatology 2020 Volume.58 No. 6 p.423 ~ p.426
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A Case of ¡®Salt and Pepper Appearance of the Skin¡¯ in Mixed Connective Tissue Disease
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Won Sang-Hyeon
Shin Ki-Hyuk Kim Woo-Il Yang Min-Young Lee Won-Ku Kim Hoon-Soo Ko Hyun-Chang Kim Byung-Soo Kim Moon-Bum
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Abstract
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The salt and pepper appearance of the skin is composed of salt (vitiligo-like depigmentation) and pepper (perifollicular pigmentation). Mixed connective tissue disease (MCTD) is a distinct disease entity with mixed features of systemic lupus erythematosus, systemic sclerosis, myositis, and rheumatoid arthritis with high titers of antibodies to U1 ribonucleoprotein (U1RNP). There are a few reports of pigmentary changes in MCTD. A 51-year-old woman presented with variably sized hypopigmented macules along with relative hyperpigmentation of the perifollicular areas on the face and neck; she was diagnosed with MCTD in a rheumatology clinic. Histopathology revealed dermal sclerosis in both hypo- and hyperpigmented areas, loss of melanocyte and pigment only in the hypopigmented area, and normal number of melanocyte and pigment in the hyperpigmented area. To the best of our knowledge, ¡®salt and pepper appearance of the skin¡¯ has rarely been reported in MCTD.
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KEYWORD
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Hyperpigmentation, Hypopigmentation, Mixed connective tissue disease, Salt and pepper appearance
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