Photoletter to the editor: Exogenous pigmentation after Diplopoda exposure leading to a dermatoscopic parallel ridge pattern on the plantar region

doi:10.3315/jdcr.2015.1209

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Research Article | Volume 11 Issue 3 (None, 2017) | Pages 85 - 86

Photoletter to the editor: Exogenous pigmentation after Diplopoda exposure leading to a dermatoscopic parallel ridge pattern on the plantar region

Tainá Scalfoni Fracaroli

Ludmilla Queirós Miranda

Juan Piñeiro Maceira

Carlos Baptista Barcaui

Under a Creative Commons license

Open Access

DOI : 10.3315/jdcr.2015.1209

PMID : PMC4619166

Received

April 20, 2015

Published

Sept. 30, 2015

Abstract

The millipedes (also known as "gongolos") are arthropods characterized by a cylindrical body consisting of rings. When threatened, they release chemicals that can cause erythema and hyperpigmentation. We report the case of a patient who developed a darkened macule on the plantar region after stepping on a millipede. Dermatoscopic examination showed a parallel-ridge pattern, which is considered typical for acral melanoma. A detailed history was essential for the diagnosis, as the clinical and dermatoscopic features suggested a malignant melanocytic lesion.

Keywords

Arthropods

Dermoscopy

Dermatoscopy

Melanoma

Parallel ridge

Simulation

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