Dermoscopic Features of Hyperpigmented Dots in Crista Cutis in Two Siblings in a Japanese Family with Inherited Acanthosis Nigricans

Shusuke Uchida, Naoki Oiso, Tamio Suzuki, Akira Kawada

Department of Dermatology, Faculty of Medicine, Kinki University, Osaka, Japan.
Department of Dermatology, Yamagata Uni- versity, School of Medicine, Yamagata, Japan.

DOI: 10.4236/jcdsa.2012.24047                

Abstract

Acanthosis nigricans is characterized by papillomatous brownish lesions mainly in the intertriginous areas. We used dermoscopy to examine such lesions in a family with acanthosis nigricans. The dermoscopic images showed an aberrant skin structure of linear crista cutis and sulcus cutis, and hyperpigmented dots in crista cutis. The hyperpigmented dots, which could not be seen with the naked eyes, may contribute to the color of the pigmented skin. Dermoscopy can be useful for evaluating disorders involving the structure of area cutanea and a change in skin color.

Keywords

Dermoscopy; Acanthosis Nigricans; Hyperpigmented Dots; Crista Cutis; Sulcus Cutis

Conflicts of Interest

The authors declare no conflicts of interest.

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