Ann Dermatol.  2008 Jun;20(2):98-101. 10.5021/ad.2008.20.2.98.

A Case of Idiopathic Eruptive Macular Pigmentation Limited to Flexural Areas

• Kim EH
• Lee ES
• Kim YC
• Kang HY

• KMID: 2172094
• DOI: http://doi.org/10.5021/ad.2008.20.2.98

Abstract

Idiopathic eruptive macular pigmentation is a rare condition characterized by asymptomatic pigmented macules involving the neck, trunk, and proximal portions of the extremities. On histopathologic examination, there was increased pigmentation of the basal layer in otherwise normal epidermis and scattered melanophages in the papillary dermis. We report a case of a 26-year-old woman with idiopathic eruptive macular pigmentation involving only the flexural areas of the body. This condition should be considered in the differential diagnosis of flexural hyperpigmented skin lesions.

Keyword

Acanthosis nigricans; Dowling-Degos disease; Erythema dyschromicum perstans; Idiopathic eruptive macular pigmentation

MeSH Terms

Acanthosis Nigricans
Adult
Dermis
Diagnosis, Differential
Epidermis
Extremities
Female
Humans
Hyperpigmentation
Neck
Pigmentation
Skin
Skin Diseases, Genetic
Skin Diseases, Papulosquamous
Hyperpigmentation
Skin Diseases, Genetic
Skin Diseases, Papulosquamous

Figure

• 

  Fig. 1 Multiple, brown, nonscaly macules and patches. (A) Axilla, (B) Inguinal areas, (C) Popliteal fossa.

• 

  Fig. 2 (A) Basal hyperpigmentation and dermal melanophages (Fontana-Masson staining, ×100), (B) No increase in the number of melanocytes compared to normal lesions (NKI/beteb staining, ×200).

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